1.Mande tribes are in large Patriarchal so you are who your father is.
2.My Ancestors who Migrated from Mali through Guinea to Liberia were Dan. I could have had some Mandingo ancestors sure, but as far as the last 150 or so years my Bloodline is that of men from the Dan tribe.
The divergence of my tribe, tribes like the Kpelle, etc. from the likes of the Mandingo is something that probably happened 1 thousand plus years ago.
I see what you are saying now. You are specifically referring to a tribe called the Mandingos, while I am stating that even though your tribe has a new name of Dan; the Dan are still Mandingos, because their origins are that of subjects of Mali.
Even if you took a DNA test you are still going to see Mandingo and Mali pop to the top just like it does for me as an African American, who maternally is Mende and paternally is Bissa. On Ancestry DNA I am even related to three women (5th to 8th cousins) that are 100% Mandingo from Senegal/Gambia, Mali and the Ivory Coast. Think about it; my folks have not been in Africa in hundreds of years and they had likely scattered from Mali centuries before then, yet my DNA is still popping with those three Mandingo women.
So like I stated I am not sure that we are not necessarily saying different things, but now I realize that you actually mean just that one specific group of people that actually call themselves Mandingos.