"The Kiddus Maqdas movement maintains that ancestralism is a religion we picked up at the time that Babylon was the world power"

* This to me sounds like you (or the movement you are referring to) is equating ancestralism with something from elsewhere rather than being a product of indigenous Africa. I agree that cultures interact with others and share and exchange ideas, but to account for ancestralism as being a product of Babylonian influence is strange IMO. Of course if the Babylonian's had a form of ancestralism, it probably is as a result of a root in Africa, wouldn't you think?