I'm somewhat uncomfortable with the whole concept of "Ghetto Names" and I don't see any reason to consider that website a legitimate source. There's nothing to stop anyone from thinking up the most "hilarious" name they can imagine and then send it in for giggles.
"Look at those dumb ghetto people. They name their kids all kinds of crazy things."
And naming them after watermelons and Obama...? No racial implications, there.
Me, I like making fun of people above me on the social scale, like politicians. Not below, like folks living in ghettos.