I would suggest people grouping Africans by regional affiliations get a map and look at it and look at the various ethnic groups in those regions. There is no such thing as East/West African, only ethic groups and/or clans. Just as an example, Nigeria and Sudan are about as far east and west one could go yet have similar ethnic groups, as well as Kenya and Liberia are but have similar clans... same for Senegal and Rwanda/Burundi