Most of the languages have some presets under accents for these, As far as I can see they might want to keep that for consistency. Except Portuguese, most major languages fall in this category…
Here are the current variants (as of 2024-09-25):
id lc name tag
1 cy cy-northwes North-Western Welsh
2 cy cy-northeas North-Eastern Welsh
3 cy cy-midwales Mid Wales
4 cy cy-southwes South-Western Welsh
5 cy cy-southeas South-Eastern Welsh
6 cy cy-wladfa Patagonian Welsh
7 sw sw-sanifu Kiswahili Sanifu (EA)
8 sw sw-barake Kiswahili cha Bara ya Kenya
9 sw sw-baratz Kiswahili cha Bara ya Tanzania
10 sw sw-kingwana Kingwana (DRC)
11 sw sw-kimvita Kimvita (KE) - Central dialect
12 sw sw-kibajuni Kibajuni (KE) - Northern dialect
13 sw sw-kimrima Kimrima (TZ) - Northern dialect
14 sw sw-kiunguja Kiunguja (TZ) - Southern dialect
15 sw sw-kipemba Kipemba (TZ) - Southern dialect
16 sw sw-kikae Kimakunduchi/Kikae (TZ) - Southern dialect
17 pt pt-BR Portuguese (Brasil)
18 pt pt-PT Portuguese (Portugal)
325 ca ca-central Central
326 ca ca-balear Balear
327 ca ca-nwestern Nord-Occidental
328 ca ca-northern Septentrional
329 ca ca-valencia-southern Valencià meridional
330 ca ca-valencia-alacant Alacantí
331 ca ca-valencia-northern Valencià septentrional
332 ca ca-valencia-tortosi Tortosí
333 ca ca-valencia-central Valencià central
334 ca ca-algueres Alguerès
503 zgh zgh-shi ⵜⴰⵛⵍⵃⵉⵜ (Tachelhit)
504 zgh zgh-tzm ⵜⴰⵎⴰⵣⵉⵖⵜ ⵏ ⵡⴰⵟⵍⴰⵚ ⴰⵏⴰⵎⵎⴰⵙ (Central Atlas Tamazight)
505 zgh zgh-rif ⵜⴰⵔⵉⴼⵉⵜ (Tarifit)
940 tui tui-bangwere Ɓaŋwere (Tupuri Bangwere)
941 tui tui-banggo Ɓaŋgɔ̀ (Tupuri Banggo)
Here is the long list of preset accents:
id lc group token name
1 en default unspecified
2 de default unspecified
3 fr default unspecified
4 cy default unspecified
5 br default unspecified
6 cv default unspecified
7 tr default unspecified
8 tt default unspecified
9 kab default unspecified
10 ky default unspecified
11 ga-IE default unspecified
12 sl default unspecified
13 ca default unspecified
14 it default unspecified
15 zh-TW default unspecified
16 eo default unspecified
17 nl default unspecified
18 zh-CN default unspecified
19 zh-HK default unspecified
20 ace default unspecified
21 an default unspecified
22 ar default unspecified
23 as default unspecified
24 ast default unspecified
25 az default unspecified
26 bg default unspecified
27 bn default unspecified
28 bxr default unspecified
29 cak default unspecified
30 cnh default unspecified
31 cs default unspecified
32 da default unspecified
33 dsb default unspecified
34 el default unspecified
35 es default unspecified
36 et default unspecified
37 eu default unspecified
38 fa default unspecified
39 fi default unspecified
40 fo default unspecified
41 fy-NL default unspecified
42 he default unspecified
43 hsb default unspecified
44 hu default unspecified
45 ia default unspecified
46 id default unspecified
47 is default unspecified
48 ja default unspecified
49 ka default unspecified
50 kk default unspecified
51 ko default unspecified
52 kpv default unspecified
53 kw default unspecified
54 mdf default unspecified
55 mk default unspecified
56 mn default unspecified
57 myv default unspecified
58 nb-NO default unspecified
59 ne-NP default unspecified
60 nn-NO default unspecified
61 oc default unspecified
62 or default unspecified
63 pl default unspecified
64 pt default unspecified
65 rm-sursilv default unspecified
66 ro default unspecified
67 ru default unspecified
68 sah default unspecified
69 sc default unspecified
70 sk default unspecified
71 sq default unspecified
72 sr default unspecified
73 sv-SE default unspecified
74 ta default unspecified
75 te default unspecified
76 th default unspecified
77 uk default unspecified
78 ur default unspecified
79 uz default unspecified
80 vi default unspecified
81 af default unspecified
82 ab default unspecified
83 ady default unspecified
84 am default unspecified
85 dv default unspecified
86 mhr default unspecified
87 mrj default unspecified
88 uby default unspecified
89 udm default unspecified
90 vot default unspecified
91 hr default unspecified
92 rw default unspecified
93 izh default unspecified
94 lt default unspecified
95 gl default unspecified
96 lv default unspecified
97 hi-IN default unspecified
98 lij default unspecified
99 tg default unspecified
100 ba default unspecified
101 ha default unspecified
102 ckb default unspecified
103 ml default unspecified
104 si default unspecified
105 ff default unspecified
106 rm-vallader default unspecified
107 syr default unspecified
108 mt default unspecified
109 sw default unspecified
110 arn default unspecified
111 be default unspecified
112 mg default unspecified
113 pa-IN default unspecified
114 kbd default unspecified
115 lg default unspecified
116 my default unspecified
117 scn default unspecified
118 kaa default unspecified
119 tl default unspecified
120 vec default unspecified
121 hy-AM default unspecified
122 hi default unspecified
123 hyw default unspecified
124 co default unspecified
125 gn default unspecified
126 bm default unspecified
127 kmr default unspecified
128 bas default unspecified
129 yue default unspecified
130 ht default unspecified
131 mai default unspecified
132 mos default unspecified
133 mr default unspecified
134 ms default unspecified
135 ps default unspecified
136 shi default unspecified
137 so default unspecified
138 ug default unspecified
139 pap-AW default unspecified
140 nia default unspecified
141 tw default unspecified
142 yo default unspecified
143 nyn default unspecified
144 ie default unspecified
145 sat default unspecified
146 ki default unspecified
147 nan-tw default unspecified
148 yi default unspecified
149 ig default unspecified
150 ty default unspecified
151 quc default unspecified
152 ti default unspecified
153 mni default unspecified
154 tig default unspecified
256 br preset gwenedeg Gwenedeg
257 br preset kerneveg Kerneveg
258 br preset leoneg Leoneg
259 br preset tregerieg Tregerieg
260 ca preset balearic balear
261 ca preset central central
262 ca preset northwestern nord-occidental
263 ca preset northern septentrional
264 ca preset valencian valencià
265 ca preset learner_es aprenent (recent, des del castellà)
266 ca preset learner_other aprenent (recent, des d'altres llengües)
267 cy preset united_kingdom Y Deyrnas Unedig Cymraeg
268 de preset germany Deutschland Deutsch
269 de preset netherlands Niederländisch Deutsch
270 de preset austria Österreichisches Deutsch
271 de preset poland Polnisch Deutsch
272 de preset switzerland Schweizerdeutsch
273 de preset united_kingdom Britisches Deutsch
274 de preset france Französisch Deutsch
275 de preset denmark Dänisch Deutsch
276 de preset belgium Belgisches Deutsch
277 de preset hungary Ungarisch Deutsch
278 de preset brazil Brasilianisches Deutsch
279 de preset czechia Tschechisch Deutsch
280 de preset united_states Amerikanisches Deutsch
281 de preset slovakia Slowakisch Deutsch
282 de preset russia Russisch Deutsch
283 de preset kazakhstan Kasachisch Deutsch
284 de preset italy Italienisch Deutsch
285 de preset finland Finnisch Deutsch
286 de preset slovenia Slowenisch Deutsch
287 de preset canada Kanadisches Deutsch
288 de preset bulgaria Bulgarisch Deutsch
289 de preset greece Griechisch Deutsch
290 de preset lithuania Litauisch Deutsch
291 de preset luxembourg Luxemburgisches Deutsch
292 de preset paraguay Paraguayisch Deutsch
293 de preset romania Rumänisch Deutsch
294 de preset liechtenstein liechtensteinisches Deutscher
295 de preset namibia Namibisch Deutsch
296 de preset turkey Türkisch Deutsch
297 en preset us United States English
298 en preset australia Australian English
299 en preset england England English
300 en preset canada Canadian English
301 en preset philippines Filipino
302 en preset hongkong Hong Kong English
303 en preset indian India and South Asia (India, Pakistan, Sri Lanka)
304 en preset ireland Irish English
305 en preset malaysia Malaysian English
306 en preset newzealand New Zealand English
307 en preset scotland Scottish English
308 en preset singapore Singaporean English
309 en preset southatlandtic South Atlantic (Falkland Islands, Saint Helena)
310 en preset african Southern African (South Africa, Zimbabwe, Namibia)
311 en preset wales Welsh English
312 en preset bermuda West Indies and Bermuda (Bahamas, Bermuda, Jamaica, Trinidad)
313 eo preset internacia Internacia
314 es preset nortepeninsular España: Norte peninsular (Asturias, Castilla y León, Cantabria, País Vasco, Navarra, Aragón, La Rioja, Guadalajara, Cuenca)
315 es preset centrosurpeninsular España: Centro-Sur peninsular (Madrid, Toledo, Castilla-La Mancha)
316 es preset surpeninsular España: Sur peninsular (Andalucia, Extremadura, Murcia)
317 es preset canario España: Islas Canarias
318 es preset mexicano México
319 es preset americacentral América central
320 es preset caribe Caribe: Cuba, Venezuela, Puerto Rico, República Dominicana, Panamá, Colombia caribeña, México caribeño, Costa del golfo de México
321 es preset andino Andino-Pacífico: Colombia, Perú, Ecuador, oeste de Bolivia y Venezuela andina
322 es preset rioplatense Rioplatense: Argentina, Uruguay, este de Bolivia, Paraguay
323 es preset chileno Chileno: Chile, Cuyo
324 es preset filipinas Español de Filipinas
325 eu preset mendebalekoa Mendebalekoa (Araka, Bizkaia, Gipuzkoako mendebaleko herri batzuk)
326 eu preset erdialdekoa_nafarra Erdialdekoa edo Nafarra (Gipuzkoa, Nafarroa)
327 eu preset nafarlapurtarra_zuberoatarra Nafar-lapurtarra edo Zuberotarra (Lapurdi, Nafarroa Beherea, Zuberoa)
328 fr preset france Français de France
329 fr preset madagascar Français de Madagascar
330 fr preset cameroon Français du Cameroun
331 fr preset germany Français d’Allemagne
332 fr preset united_kingdom Français du Royaume-Uni
333 fr preset cote_d_ivoire Français de Côte d’Ivoire
334 fr preset tunisia Français de Tunisie
335 fr preset mali Français du Mali
336 fr preset algeria Français d’Algérie
337 fr preset canada Français du Canada
338 fr preset morocco Français du Maroc
339 fr preset burundi Français du Burundi
340 fr preset senegal Français du Sénégal
341 fr preset niger Français du Niger
342 fr preset netherlands Français des Pays-Bas
343 fr preset togo Français de la République du Togo
344 fr preset burkina_faso Français du Burkina-Faso
345 fr preset belgium Français de Belgique
346 fr preset congo_brazzaville Français du Congo (Brazzaville)
347 fr preset congo_kinshasa Français du Congo (Kinshasa)
348 fr preset italy Français d’Italie
349 fr preset benin Français du Bénin
350 fr preset romania Français de Roumanie
351 fr preset guinea Français de Guinée
352 fr preset chad Français du Tchad
353 fr preset central_african_republic Français de République centrafricaine
354 fr preset united_states Français des États-Unis
355 fr preset switzerland Français de Suisse
356 fr preset portugal Français du Portugal
357 fr preset gabon Français du Gabon
358 fr preset syria Français de Syrie
359 fr preset greece Français de Grèce
360 fr preset austria Français d’Autriche
361 fr preset ireland Français d’Irlande
362 fr preset reunion Français de La Réunion
363 fr preset mauritania Français de Mauritanie
364 fr preset luxembourg Français du Luxembourg
365 fr preset haiti Français d’Haïti
366 fr preset comoros Français des Comores
367 fr preset martinique Français de Martinique
368 fr preset guadeloupe Français de Guadeloupe
369 fr preset hungary Français d’Hongrie
370 fr preset new_caledonia Français de Nouvelle-Calédonie
371 fr preset french_polynesia Français de Polynésie française
372 fr preset french_guiana Français de Guyane
373 fr preset vanuatu Français du Vanuatu
374 fr preset mayotte Français de Mayotte
375 fr preset cyprus Français de Chypre
376 fr preset equatorial_guinea Français de Guinée équatoriale
377 fr preset seychelles Français des Seychelles
378 fr preset malta Français de Malte
379 fr preset mauritius Français de l’Île Maurice
380 fr preset st_martin Français de Saint-Martin
381 fr preset monaco Français de Monaco
382 fr preset lebanon Français du Liban
383 fr preset djibouti Français de Djibouti
384 fr preset wallis_et_futuna Français de Wallis et Futuna
385 fr preset st_barthelemy Français de Saint-Barthélemy
386 fr preset andorra Français d’Andorre
387 fr preset st_pierre_et_miquelon Français de Saint-Pierre-et-Miquelon
388 fr preset rwanda Français du Rwanda
389 nl preset netherlands Nederlands Nederlands
390 nl preset belgium Belgisch Nederlands
391 nl preset suriname Surinaams Nederlands
392 nl preset france Frans Nederlands
393 nl preset germany Duits Nederlands
394 nl preset curacao Nederlands van Curaçao
395 nl preset aruba Nederlands van Aruba
396 nl preset sint_maarten Nederlands van Sint-Maarten
397 nl preset south_africa Zuid-Afrikaans Nederlands
398 nl preset namibia Namibisch Nederlands
399 nl preset indonesia Indonesisch Nederlands
400 ga-IE preset mumhain Gaeilge na Mumhan
401 ga-IE preset connachta Gaeilge Chonnacht
402 ga-IE preset ulaidh Gaeilge Uladh
403 gl preset atlantico Atlántico (seseo e gheada)
404 gl preset central Central (gheada)
405 gl preset oriental Oriental (común en zona oriental)
406 gl preset normativo Normativo (estándar)
407 gl preset neofalante Neofalante
408 zh-TW preset keelung_city 出生地:基隆市
409 zh-TW preset taipei_city 出生地:臺北市
410 zh-TW preset new_taipei_city 出生地:新北市
411 zh-TW preset taoyuan_city 出生地:桃園市
412 zh-TW preset hsinchu_county 出生地:新竹縣
413 zh-TW preset hsinchu_city 出生地:新竹市
414 zh-TW preset miaoli_county 出生地:苗栗縣
415 zh-TW preset taichung_city 出生地:臺中市
416 zh-TW preset changhua_county 出生地:彰化縣
417 zh-TW preset nantou_county 出生地:南投縣
418 zh-TW preset yunlin_county 出生地:雲林縣
419 zh-TW preset chiayi_county 出生地:嘉義縣
420 zh-TW preset chiayi_city 出生地:嘉義市
421 zh-TW preset tainan_city 出生地:臺南市
422 zh-TW preset kaohsiung_city 出生地:高雄市
423 zh-TW preset pingtung_county 出生地:屏東縣
424 zh-TW preset yilan_county 出生地:宜蘭縣
425 zh-TW preset hualien_county 出生地:花蓮縣
426 zh-TW preset taitung_county 出生地:臺東縣
427 zh-TW preset penghu_county 出生地:澎湖縣
428 zh-TW preset kinmen_county 出生地:金門縣
429 zh-TW preset lienchiang_county 出生地:連江縣
430 zh-TW preset hong_kong 香港
431 zh-CN preset 110000 出生地:11 北京市
432 zh-CN preset 120000 出生地:12 天津市
433 zh-CN preset 130000 出生地:13 河北省
434 zh-CN preset 140000 出生地:14 山西省
435 zh-CN preset 150000 出生地:15 内蒙古自治区
436 zh-CN preset 210000 出生地:21 辽宁省
437 zh-CN preset 220000 出生地:22 吉林省
438 zh-CN preset 230000 出生地:23 黑龙江省
439 zh-CN preset 310000 出生地:31 上海市
440 zh-CN preset 320000 出生地:32 江苏省
441 zh-CN preset 330000 出生地:33 浙江省
442 zh-CN preset 340000 出生地:34 安徽省
443 zh-CN preset 350000 出生地:35 福建省
444 zh-CN preset 360000 出生地:36 江西省
445 zh-CN preset 370000 出生地:37 山东省
446 zh-CN preset 410000 出生地:41 河南省
447 zh-CN preset 420000 出生地:42 湖北省
448 zh-CN preset 430000 出生地:43 湖南省
449 zh-CN preset 440000 出生地:44 广东省
450 zh-CN preset 450000 出生地:45 广西壮族自治区
451 zh-CN preset 460000 出生地:46 海南省
452 zh-CN preset 500000 出生地:50 重庆市
453 zh-CN preset 510000 出生地:51 四川省
454 zh-CN preset 520000 出生地:52 贵州省
455 zh-CN preset 530000 出生地:53 云南省
456 zh-CN preset 540000 出生地:54 西藏自治区
457 zh-CN preset 610000 出生地:61 陕西省
458 zh-CN preset 620000 出生地:62 甘肃省
459 zh-CN preset 630000 出生地:63 青海省
460 zh-CN preset 640000 出生地:64 宁夏回族自治区
461 zh-CN preset 650000 出生地:65 新疆维吾尔自治区
462 zh-CN preset 710000 出生地:71 台湾省
463 zh-CN preset 810000 出生地:81 香港特别行政区
464 zh-CN preset 820000 出生地:82 澳门特别行政区
465 tk default unspecified
665 quy default unspecified
993 bs default unspecified
994 gom default unspecified
995 km default unspecified
996 knn default unspecified
1285 skr default unspecified
1286 tok default unspecified
1623 lb default unspecified
3733 dyu default unspecified
3734 nso default unspecified
3735 om default unspecified
3736 st default unspecified
3737 ts default unspecified
3738 ve default unspecified
4071 nd default unspecified
4072 nr default unspecified
4073 ss default unspecified
4074 tn default unspecified
4075 xh default unspecified
4076 zu default unspecified
4498 hil default unspecified
4758 jbo default unspecified
4759 kn default unspecified
4760 ln default unspecified
4761 lo default unspecified
4762 sdh default unspecified
4763 snk default unspecified
4764 zgh default unspecified
5485 dag default unspecified
5486 zza default unspecified
5513 byv default unspecified
5753 tyv default unspecified
5754 wo default unspecified
5988 nhe default unspecified
6343 nhi default unspecified
7457 bo default unspecified
7458 ny default unspecified
9680 ltg default unspecified
10517 os default unspecified
10681 ewo default unspecified
10682 jv default unspecified
10783 gu-IN default unspecified
10896 lzz default unspecified
11398 sco default unspecified
11825 qvi default unspecified
11849 wep default unspecified
12019 fuf default unspecified
12265 guc default unspecified
12266 sd default unspecified
12267 vmw default unspecified
14168 unknown default unspecified
14289 crh default unspecified
14342 dav default unspecified
14389 luo default unspecified
14417 kln default unspecified
15030 azz default unspecified
15214 bal default unspecified
15215 gos default unspecified
16012 nqo default unspecified
16106 cdo default unspecified
16107 dar default unspecified
16108 shn default unspecified
16347 aa default unspecified
16348 abb default unspecified
16349 bax default unspecified
16350 bba default unspecified
16351 bbj default unspecified
16352 bci default unspecified
16353 beb default unspecified
16354 bfd default unspecified
16355 bkm default unspecified
16356 bnm default unspecified
16357 bri default unspecified
16358 bum default unspecified
16359 dua default unspecified
16360 ebr default unspecified
16361 eto default unspecified
16362 fan default unspecified
16363 fue default unspecified
16364 gya default unspecified
16365 ibb default unspecified
16366 ksf default unspecified
16367 mbo default unspecified
16368 mxu default unspecified
16369 nnh default unspecified
16370 qxp default unspecified
16371 rif default unspecified
16372 teg default unspecified
16373 tui default unspecified
16374 tvu default unspecified
16375 wes default unspecified
16503 ee default unspecified
16504 fub default unspecified
16505 pcm default unspecified
I don’t know about scripts…
Except one language, variants collected in the last call are not yet inserted into the database.