To sum it up: their mitogenomes align pretty well with what one would expect for a Cushitic-like population with mild exposure to contemporary Egyptians.
The same file also speaks for a DEVIATION of modern Sudanese peoples. This could likely be an introgression of both external and "southern" materials during the Medieval period and beyond. However, I'd wager their "Eurasian" vs "SSA" portions do not differ much. Obviously, this isn't the case for all modern Sudanese groups. Like many populations of modern North and Northeast Africa, their ancestries associated with external influence depend on tribal, religious, or even linguistic factors.
BEAR IN MIND THIS IS NOT WIDE-GENOME AUTOSOMAL
Although, from the (relatively) recent low-quality genome of the Kerma period (on top of an ABUNDANCE of cranial & dental metric & non-metric data), one could conclude that major players of Nubia =a Cushitic-like RACE. Not that you guys didn't subscribe to that idea.
Finally, this is most plausibly not the final form of Abagail Breidenstein (her IG)'s Nubian study. It was brought up again in ISBA9 too, as indicated by this thread.