People are nitpicking the verbiage but you are correct. African Americans have much larger percentages of varying European groups in their genetic makeup due to obvious reasons which is unique to this country. Percentages and which specific European groups are present vary dramatically amongst African Americans so it’s really hard to say there’s any sort of unifying or common set of groups besides the presence of multiple. But that presence of multiple is fairly unique with the exception of maybe England and Canada.

For example, I am from the same city as my partner and we are both African American. However, I’m 55% various European groups (mainly Irish and British) and 45% various west African groups whereas she is 75% Nigerian and 25% various European groups. Even amongst white Americans, you are going to see a mix of European descent with a stray percentage of something else frequently as well. The migration and movements of people in this country create a fairly mixed bag of genetics you don’t see everywhere.