Without digging into the history of any of them: Male? American? People?
EDIT: Also, I'm a bit of the position that imposing these group identities on others is undesirable. If they all refer/referred to themselves as "Black" all good, otherwise I find it harmful to construct these lines between us unless in a particular context where the specific meaning is clear and it serves a valid purpose. Right now I feel it obstructs more than it clarifies.
I avoid referring to anyone by ethnicity or "race" in the general too fwiw (unless in a very specific context, like somebody getting sunburnt easily because of their skin color or being discriminated against because of somebody elses impression of it)
EDIT: Also, I'm a bit of the position that imposing these group identities on others is undesirable. If they all refer/referred to themselves as "Black" all good, otherwise I find it harmful to construct these lines between us unless in a particular context where the specific meaning is clear and it serves a valid purpose. Right now I feel it obstructs more than it clarifies.
I avoid referring to anyone by ethnicity or "race" in the general too fwiw (unless in a very specific context, like somebody getting sunburnt easily because of their skin color or being discriminated against because of somebody elses impression of it)