Finding data 

You’re right about data here. I follow some research out of the MIT Media lab by Cesar Hidalgo who may have some interesting data resources if you poke around.
Some additional starting points:

https://boffosocko.com/2016/02/01/global-language-networks/
https://boffosocko.com/2015/06/08/a-world-of-languages-and-how-many-speak-them-infographic/
Annotated on September 11, 2020 at 09:52AM

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