Try Black Lightning. I'd also recommend The Falcon from Marvel Comics

Go for the best. Superman of Earth-23 or Jace Fox as the Batman

John Stewart, Cyborg and Vixen would be my top picks.

Steel and Black Lightning are runners up.

What about green lantern (John Stewart) or vixen?

Oops etrigan ended up commenting the same thing as me lol

If you wanted to do the first Black female superhero in DC, you could choose Bumblebee.

Black Lightning