I pasted the wrong link, which is my mistake - https://en.wikipedia.org/wiki/African_Greeks

And I'm not confusing you with OP, I'm explaining that North Africa was not bordered on the south by an impenetrable desert and that thinking only North African peoples were in Ancient Greece really mid-understands geography and proximity to Africa and the commonality of trade along the Nile. Going east, Ancient Buddhists started depicting Shakyamuni Budda as a human figure and not an empty space under a tree directly as the result of Greek philosophical exchange. Buddhist "missionaries" are accounted for in Athens and the Levant more than 2000 years ago.

Ancient Greece was a pretty cosmopolitan place for the ancient world.