Another interesting thing I found, besides the sources saying basically the same thing, with an impressive consensus, is that this author argued something interesting, where Minoan Crete was probably originally a serpent goddess, being Obviously important to the pre-Indo-European people of Greece, (since they named a city after her) but then it says that Pallas was an IE deity, and basically there was a kind of syncretism between both deities to form "Pallas Athena", that is, with this EEF/IE syncretism Athena underwent an Indo-Europeanization.
Other authors talk about Athena being Mesopotamian, I don't see how that could be the case... and if it is legitimate, this could perhaps be linked to how the Athenians were described in Greek sources, basically as being indigenous to the land, and linked to the Pelasgians.