What would you say the most popular class of ethnic group, tribe and tribal region is between Edo (which has a yoruba area), Cross River/Akwa Ibom based (Ibibio/Efik), Delta (Urhobo, Itsekiri and has ibo sections), Kogi (Igala and Bayelsa (Ijaw) apart from the three major tribes which are namely Yoruba, Ibo and Hausa in terms of affluence and literacy especially within the people. I would surely go for Edo based on my actual obversations.