Maybe you don't realize it, but you're only proving my point by trying to show historical references to West African people in other portions, as if their history in West and West-Central Africa is insuffienct in and of itself.
No, I'm not proving your point, which is an isolationist view, which does not even take into account the oral traditions of the people themselves.
For example, in the thread where you mentioned Mansa Musa. He is notorious for his pilgrimage to Mecca and being in possession of over 500 slaves. You are not taking into consideration the trans Saharan trade and culture, or what is known as Proto Saharan, which stretched in antiquity from the Chadic basic to the Nile valley.
Mansa Musa and the Keita clan, according to family tradition, descended from one of the sons of Bilal. Who was Bilal?
http://en.m.wikipedia.org/wiki/Bilal_ibn_Rabah_al-Habashi
Note, he was of Abyssinian descent, this is to say, an Ethiopian.
Step your game up bro and come with some research rather than unsubstantiated claims.
I done already covered most of this ground in previous threads.