I think the Hyksos invasion introduced a lot of foreign blood. They were a Semitic people.
Race meant nothing to Egyptians. As long as you worshiped one of Egypt’s 3,000 Gods, Drank from the Nile, spoke Copt (the Language of Egypt), and liked cats—you were OK. They were mixed race people—Some white, some black most brown. They would see our racial focus as silly and foolish. They even managed to convince Nubia that they too were Egyptians and they fought to help their Egyptian Brothers. This treaty opened up all the wealth of Africa into Egypt—and sent Egyptian ideas and culture into Africa. The Masai of Kenya still use the Egyptian water well to water their cattle.