@Shimbiris
The Hebrews and others in the Levant were depicted correctly and some of the Libyans were depicted as light as coastal Berbers.
How did the Egyptians perfectly represent the attire and hairstyles of Nilotics, if they didn't encounter them? Mere propaganda can't account for that level of accuracy.
Libyans were not all represented as lily white:
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Syrians:
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It wasn't always the case, obviously, but you can definitely see that they stylize and exaggerate groups' features. With Nubians it seems clear that they liked honing in on the more Nilotic elements among them or those of them with a more Nilotic appearance who, by the way, often still prove anything from Somali to Tigre admixed or more:
I grew up around a lot of them. They vary from looking very Nilotic shifted to looking like off-Saidi Masri or off-Khaleeji, to looking Somaloid or Habeshoid or generally Horneroid. And, believe it or not, some of the very Nilotic looking ones can still be very admixed. I still remember when almost a decade ago now a Sudani bro contacted me on 23andme and he looked very Madow and yet he was more MENA admixed than me and my Tigray friend.
I'm afraid all evidence points to Nubia and the Red Sea hills pretty much always being fairly admixed since the Neolithic at the very least. I find it hard to fathom that Horners (a screenshot of the Neolithic there) look fairly admixed and that clearly the early modern to current era inhabitants were fairly admixed and we also have medieval samples that seem fairly admixed but there was just some highly Dinka intermission around the Iron Age, which this clearly admixed sample belongs to, and the Bronze Age? Not buying it.
All future samples will likely show fairly admixed individuals ranging from being Somali-like to like Saidi Egyptian outliers. You might find some extremely Nilotic types but that was certainly not the norm, I'd reckon.