Hello, I don't know the source of the language names in Occitan but they are all in French... and it's not even approaching =/ Some sources: https://hosted.weblate.org/projects/iso-codes/iso-639-2/oc/ https://github.com/unicode-org/cldr/blob/main/seed/main/oc.xml https://github.com/jitsi/jitsi-meet/blob/master/lang/languages-oc.json I hope this can help!