Our African ancestry is ancestral East African which is very divergent from Nilotic.Apart from Horn Africans retaining this ancestry, there is no example of a pure modern sample.Nilo and West Africans are not closely related.
Also, the Ancient East African branch in HOAs lacks that admixture of West-Central African. It is even more distant than the contemporary Nilos with their nominal West-Central African introgression. You're making me laugh.