Yeah but in Sudanese society you only acknowledge your fathers lineage, many Nubians have multiple non-Nubian female ancestors ranging from Turkey, Egypt, Syria, Greece, etc but they do not claim any of those ancestries.
Of course but if we are talking about the "original" nubians from
Historians and anthropologists are still not sure when exactly Nubians adopted a Nilo-Saharan language. It could be much older than we think.
Anyway they said : The rise (∼300 BCE) and collapse (∼350 CE) of the Meroitic Kingdom in Nubia provides a possible historical context for admixture between Egyptian peoples carrying West Eurasian-related ancestry and local Nubians (who may also have already had some amount of West Eurasian-related ancestry by this time, a process that would be further clarified by additional ancient DNA analysis of older individuals from Nubia).
If i got this correctly the west eurasian thing in these nubians was probably introduced after the fall of meroe. The study also said : Thus, despite a superficial resemblance on our PCA, present-day Nubian populations are not descended directly from a population related to the earlier Kulubnarti Nubians without additional admixture following the Christian Period.
Again if i got this correctly they are saying modern nubians are not direct descendants of these medieval nubians