However, the Muhammad I think you were referring to (you know, the prophet one), doesn't have an Ali in his name at all. He had a compatriot named Ali who was probably his best friend and one of his top supporters during his lifetime.
So, I think you just made the opposite point, which is - at this point, I have NO IDEA which Muhammad you're talking about. Probably the boxer... I bet you know more about him than the entirety if Islam.