What a mess. As an historian, though no longer teaching, all I can say is that the people then did not think in any way like we think today. That means they didn’t see themselves or other people in the categories that we use and stupidly fight over. My area of specialization is Asia and as a long time Hawaii resident I won’t make any comment on a blond haole portraying someone named Ng set in the one place in the US where the majority are not Caucasian. We can add to the whitewash Mickey Rooney playing M. Yunioshi in Breakfast at Tiffany’s, a movie I very much enjoyed as a kid in Indiana until I saw again a few years ago when it was so blatantly racist I had to turn it off. But we’re talking about ancient Egypt.
People move around and they often don’t follow later rules about who they shouldn’t get involved with. Historically modern Egyptians are still the same people with centuries of other people mixing in. The “sea people” to the north were Mycenaean or post Hittites but that is as close as you get to caucasian people. Oh, there may have been some of the Aryan folks from the Caucasus who took a wrong turn on their way to India but I’m pretty sure that Nefertiti didn’t look like a white woman with bad makeup. But you never know.