You speak in semantics so everything requires a clarification. Fair enough: by Egyptian depicted Sudanese, I refer to the blacks from the South of the Nile, since that is whom is depicted in the ancient Egyptian art. Their creation would be a few thousand years ago, which incidentally traces back to the history of your Northern mixed ancestry.
In other words, the land on which your people reside likely originally belong to the Southern Sudanese, along with in my thinking all of current day Sudan. Northern people should live further North with the Egyptians since that is likely a better "cultural and religious fit". That is a better solution than the current one with the Southern Sudanese losing significant amounts of land and manpower to Arab-backed invaders.
America and Obama should have invaded Sudan and pushed you all into Egypt, rather than let things play out as they have done.