“First, Joseph was sementic, ie an Arab for all intents and purposes, so are Arabs white guys?”
It all depends on how you define “white” I guess. They’re not East Asian, and they’re not sub-Saharan African, so they are “caucasian”. Probably not white enough to be members of the KKK or something like that though!
Interesting side note for the Afro-centrists who claim that the ancient Egyptians were black (like the Bantu-speakers of today)--St. Paul is mistaken for an Egyptian by the Roman commander (chiliarch) (Acts 21.37).