From a sidebar by Michael Will in That's Blaxploitation! (1995), by Darius James, here are some movies that could be considered "whytesploitation."
"The tag [blaxploitation] was given to any seventies genre item that featured a prominently black cast. By theory then whitesploitation would have to take in a solid percentage of all the rest of that decade's American films. Let's therefore be more literal and single out movies that, like the Mandingos of blaxploitation's hardcore that sensationalize black suffering, caricature the extremes of white subcultural grotesqueries, and turn them into low, most often unintentional, comedy."
Scorchy is like a blaxploitation movie, but with Caucasian leads. The others are mostly about poor Southern crackers, along with a few about crazy rich white people.
I don't know how Scum of the Earth (1974) was left out. Also I think Faster, Pussycat! Kill! Kill! belongs here.