Mutton is very popular here. As a matter of fact, the area an hour or so north of me, Owensboro KY, is known as the mutton BBQ capital of the world. At least that's what they claim. It's cooked here just like the pork, low and slow. Good mutton is good, although I don't like it as well as I do pork or beef. As a matter of fact, mutton BBQ is the only way I'll eat a sheep. Tried lamb chops once, and lasted about 3 bites.
https://youtu.be/dX1eyEBOm5s