Hey. New player, first post, but I'm actually playing as a Feudal Pagan Mali Empire with consorts right now. I can confirm West African does not need equality or egnatic clans to use them (I took cosomopolitian, totem guardians, sea-bound and Temporal when reforming).
One fun thing you can do with cosmopolitan + consorts is marry your daughters off to the Christians and Muslims, and send them consorts once they arrive in foreign courts (They lose their consorts when they marry/move out, so don't assign them beforehand); The consorts will ensure some of the kids are of your bloodline/religion. I'm not sure this has any use beyond generating future adventurer claims against you, but it is quite fun to cuck the Karlings and company.
Also, I'm not sure if this is buggy or not, but with Eldership succession and no further changes to succession laws, I can actually appoint female heirs. As a female ruler with consorts, I can take non-materlinial marriages, and still likely have some bloodline children, thus allowing me to take whatever husband I want for the stat-boost/non-aggression pact. I can then marry off any non-bloodline children that I like to their distant cousins (materillinially if necessary) and demand they convert to African while they are in my court. I've experimented with marrying Christian Rulers to ensure that they are succeeded by African heirs of my bloodline, but Europe is very good at gobbling up the lands of any African ruler who is not part of my realm, and I'm not terribly interested in colonizing Europe directly - It is enough of a logistical nightmare to control most of Africa along with some of Arabia and India. I'm sure there is a good way to exploit this for bloodlines, but I am new and I don't know where to find them aside from the Karlings, Vikings, and Mongols (who are Hindu this playthrough and refuse to wed their children to my casteless bloodline).