I lived all over the US when I was young. If I had to pick a part of the US that I most strongly identify with that kind of cuisine, it would be the Midwest, no contest. Other parts of the US used it to varying extents but in the Midwest it was a core part of the cuisine. They practically reveled in it.

Some of the casseroles constructed that way from those days were legit delicious but I haven’t seen or heard of them since the prior millennium. I’m not even sure if some of the prefab ingredients are still available. I’d eat some of those again in a heartbeat. You don’t see it on the coasts anymore but the tradition still seems to exist in flyover areas.

NB: I just googled some of these things and the recipes appear to exist online, I just don’t know where to buy some of the canned ingredients.