Since I usually do the camp cooking on a campstove, anything that will stew in a pot, heat up in a pot, simmer or stir-fry in a skillet, or sizzle on a griddle. With family along, pasta dishes are popular, the pasta on one burner, the sauce on the other. Someone else can put together salads and slice the bread.
If it is just a quick meal on a stop, with hookups, I'll zap something. Endless variety of frozen meals that will microwave, maybe one or two of them actually good for you.
We do a lot of cold cereal breakfasts on travel days, but I like to do a griddle breakfast if it is a day in camp and we can get everyone up about the same time. Pancakes, eggs, meats, hash in various combinations.