Banestorm p. 33 lists:
- Anglish (with Northland and Aralaise as dialects)
- Old Aralaise
- (Classical) Arabic
- Latin
- Ladino
- Hebrew
- Tredoy Patois (mix of Arabic and Anglish)
- Elvish (Elven trade tongue)
- an unnamed (universal) dwarf language
- 'most nonhumans' have their 'own languages' (presumably at least one and probably more per race)
Fantasy: Tredroy adds:
- French (descended from the medieval version, possibly the same language as Old Aralaise)
- Italian
- Chinese (with Maimaiyu as the main dialect spoken in Tredroy)
Is there anything more detailed out there? Official or not. I'm especially interested in whether any of the non-human languages actually have names other than 'elvish', 'gnomish', 'reptile-man language', etc.