I mean
Tuskaloosa does exist.
On the flipside it also means that leaders like Alexander and Shaka do not have to bring their own civs.
As for Sub-Saharan Africa I agree that Wagadu is a must. I do agree that Mali would be a weird fit, unfortunately, but all will be forgiven because Mansa Musa can just appear later as a leader for the Sahel region.
I'd also love for West Africa to get civs from the Guinea Coast such as Benin for Exploration and the Ashanti for Modern.
Ethiopia eventually needs to be Modern for East Africa and I'm not too picky on whether it would be Somalia or something on the Swahili coast for Exploration.