You're talking about the west Eurasian female sex bias in Kulubnarti Christians? Sure.noobins chased after misri woman like African American men chase after whyte women, and they were matrilineal like you mentioned.
same reason why Scotland speaks a language related to English, the Scottish nobility kept marrying English women and gaelic died out.
As for the post 14th century period it was the children of matrilineal Nubian females and patrilineal Arab males that inherited everything. That was the main mechanism of Arabization/Islamization. It's apparent in the transition from e1b1b in the Christian period to the present J1 in modern times. I'll try to find the historiographical source for you as well.