That graphic of the language families seems to misspell Estonian (as Estinain) and Finnish (as Finish) ?
Seems like an odd oversight for such a project.
I came here to post this (and add little to any substantial discussion). I'm glad to see someone else beat me to it!
Also: Slovak (Solvak) and Slovenian? (Solvene).
There were so many I thought maybe I misunderstood how they were being represented in that graphic.