I made a variant of Mac 'n cheese, yesterday, with some sausage and peas in it. The first Mac 'n cheese I've ever made, since it's not really a thing here in Norway (I'm 55 YO).
I've made the very similar side dish called "makaronistuing" in Norwegian (lit. "macaroni stew"), which uses a bechamel sauce (and not a cheese based sauce) many, many times, but this is the first time I've made it with cheese in the sauce and as a main dish.
I'm having leftovers of that today.
Incidentally, my favorite "comfort food" from childhood (along with pancakes, European style, think slightly thicker crepes) are
also macaroni based; basically just macaroni and fried minced meat with ketchup. Maybe that's contributed to me never exploring Mac 'n Cheese until now?