The range of what they publish is one of the best-kept secrets in publishing. I'm not sure why it's so little known beyond that it wasn't always true: Those presses didn't really seem to get into fiction and some of the other topics I mentioned until about the 1980s or 1990s.
But there seem almost no limits to what they'll publish now. The woman who wrote Mama Dib's Cookbook may not even have a college degree. And yet she's published by a university press a lot of academics would love to have. It's fascinating.