The ones you know about - ie - the most infamous and twisted, highest body-counts etc.
There are fucking LOADS of black serial killers from the USA. Loads. I have a book about serial killers and at the back, is a complete, absolutely huge index of every documented serial killer, their race/DOB etc, M.O and victims. It's such a good read. Anyway, my favourite thing to do when I read the index was to google image each killer to see what the weird fucker looked like. But that's off topic. Anyway, yeah fucking tons of black serial killers, 9/10 preying on black women. Very rarely venturing beyond rape and strangulation though it seems - weird torture/mutilation/etc seems to be very much a white thing in serial killers for the most part.
The last few serial killers I can remember being caught or whatever in the USA were black dudes. Anthony Sowell in Ohio, some other dude and maybe a third.
Also tons of Latino but not that many in North America, those entries tended to be centralised in central and south America.