Other sub genres include zydeco and blues piano (both of which tend to be Louisiana-centric). Many rock fans find both genres easy to love. For the former, you might try Zachary Richard (Fatras! is great, but any record featuring Sonny Landreth on guitar will do). For the latter, Professor Longhair is the go-to guy, although James Booker's Lost Paramount Tapes is also a great record.
Happy hunting!
Happy hunting!