Dear Matthew,
Thank you for this. Yes that is consistent with reattach I have quoted in the past that the first language is dated to about 8,500 BCE and all other languages came from this as your graphic demonstrates. The word Baba-el has turned out to be a much older word than Sumarian or Babylonian also. It dates back to the earliest language and means “God the Father”.
So trying to place the tower of Babel into the 16 the century BCE or earlier does not make sense on two grounds. 1) there were already many languages (as per your chart) and 2) the meaning of “building a tower to Heaven” for the enlightened sons of Noah did not mean a physical structure, but a connection with the Father, to whom they dedicated their life and their work. (As Jesus taught.)