Interesting chart but it’s possible to quibble about some of the details. I don’t know why they have Flemish as a separate language from Dutch when they don’t have Walloon as a separate language from French. They omit Sardinian, Galician, and Vlach among the Romance languages (I think Galician is almost identical to Portuguese but it’s treated as a separate language). Tzakonian is a Greek dialect that is very different from standard Modern Greek so it could arguably be treated as a separate descendant of ancient Greek. If Afrikaans is regarded as separate from Dutch, as it should be, why not treat Haitian Creole as a separate language from French?
Thanks for the comments. This is the graphic with which I’m most familiar re: language relationships. This will make a good conversation starter for our homeschool.