Honestly? Pizza and pizza related foods. It's awesome and I love pizza don't get me wrong, but there's such a limited variety of things to do with them and so that's my choice.
Tacos, burgers, soups, pasta, barbecue and curry foods all have shit tons of different varieties and options to where it would really suck to be without them. Curry I've not had much of since there's no "real" Indian food places near me according to my Indian friends (though part of me thinks they're gatekeeping but eh) but I know that so many Indian and Japanese foods use a "curry" and so that's fucked up to choose that
Thanksgiving leftovers are almost always turned into tacos and soup, just thanks to them being easy foods to use for leftovers