What genetic studies?
Fwiw, the Mande people started fleeing Mali in the 1400's and moving into neighboring regions like Ivory Coast, Ghana, Liberia, Sierra Leone, Guinea, Senegal, Gambia and Burkina Faso. So testing for Mande people comes back to Ivory Coast and Ghana just as much as much as Mali. So the only way to truly tell what somebody's ethnicity is to GEDMatch the results. Here are some prelimenary numbers from one website that is accumulating DNA test results for Africans in the Disapora.
Diaspora Comparison