To avoid the unnecessary taking of languages that will not exist in this campaign, I can comprised a list of what should be an extensive list for players to choose from.
Drow Sign Language
PlantSpeech (all are just 1 language)
Understand that just because a language is on this list does not mean it
WILL show up, or that it will show up more than once or twice. This is just to help narrow down the choices you make.
Anyone with a language not on this list, feel free to change it to another language as you chose (try and pick a ‘similar’ language, if possible, but thats just for roleplaying reasons, and not anything I require)