We all have our different "hates", but the common theme for my kids is that they hate, hate, hate squash and sweet potatoes, and so does DH. I love them! So I will just buy one zucchini or summer squash, or an acorn squash, or a sweet potato and make it for me. It's the best!
Other big hates:
Tomatoes: DD and DS12 won't eat a tomato in any form. I like actual tomatoes (cherry tomatoes fresh off the vine, still warm from the sun, are like heaven!) but I detest tomato-based products like ketchup, or tomato juice. soup, etc. I will eat cooked tomatoes in a dish or sauce like marinara or chili although neither are favorites, but I will not eat a cold tomato on a sandwich...I will take it off and eat it by itself and then eat the burger or whatever lol
Eggs: DS12 and I will not eat egg yolk unless it is completely cooked (overhard) and I really don't like the eggy taste of eggs, so unless it is masked, I probably won't eat it. I tolerate hard boiled eggs but put salt and horseradish on it to cover up the egg taste lol
Chocolate: Neither DS18 or I like chocolate very much. It's OK if I'm in the right mood, but that is hardly ever and I will almost never choose it over a fruity flavor like lemon or strawberry. And I will pass on chocolate ice cream and cake every time. (except Portillo's, which I have very recently found out has an insanely AMAZING chocolate cake!)
Yogurt: DH and DD hate it....doesn't matter what type, flavor, or how many "add-ins" are offered. They will not touch it. The boys and I love it!
I have never, ever, ever made liver or lima beans for my family (the two most disgusting "normal" foods there are) and I hate celery so I never buy it. I'm not really sure if my kids have ever eaten it other than when it's cooked in a soup or dish somewhere we are eating out at.
As picky as my kids are about some things, all three will eat calamari - the ones with tentacles, not just the round pieces! - Brussel sprouts, asparagus, crab legs, and anchovies. Weirdos!