LOL! You guys are killing me. Black Panther isn't African American. He's Wakandan. He's technically only able to legally operate in the US at the blessing of the State Department. That also means that in some states T'Challa can't even make a citizen's arrest. Anyone he apprehended would be released, if they had even a Trump lawyer representing them in court.
But...comics.
I want to focus strictly on the African American experience, womb to the tomb, cradle to the grave, so to speak. Luke Cage, Falcon are probably locks, since both are fairly popular in the fictional universe. Bishop might be a good one, although like Adam, I'm not sure that anyone sees him as an icon. I wish there was a way to merge Bishop and Isaiah Bradley into a single character. The past and the future combined.