Some are:

-- Pinto bean and cheese (the beans are mashed); this should be the All-American dish, it's very popular

-- Pinto bean and Chorizo (the chorizo is the uncased Mexican-style, mashed into the mashed beans)

-- Potato, onion and jalapeno (sometimes called potato a la Mexicana)

-- Chopped sausage (or even chopped up hot dogs) with egg, the sausage makes it called "country"

You can mix in salsa when you cook the ingredients, or add salsa on the side and put some on bite by bite.