Flipping back to the OT, I don't have any examples of things from other countries, but I do always find myself going back to the brands and styles of things I grew up with. Coke, not Pepsi. JIF Peanut Butter, Dukes Mayo (which I can't get in Oregon), etc etc... Our tastes change as we get older but a lot of preferences come from growing up.
I agree that how we were raised plays a bigger part in our tastes than where our ancestors came from.
I grew up in a German community with an German-English-Irish mother. I love good sauerkraut, sausages, beer, pickled herring, Stollen, whiskey, red beats, kohlrabies, winter onions, toffee, oyster stew (after Midnight Mass, of course), salty ham, ham loaf, lamb and many, many other assorted dishes from several different countries. Not because my genes tell me to, but because my family ate them when we got together. I also love good Mexican food, not TexMex, real Mexican food and I don't remember seeing Hispanics at any family gatherings until my sister married one.
I think I said earlier that I am an opportunistic eater. If someone made it, I'll taste it. I raised four more just like me. While they're friends subsisted on McNuggets and ketchup, my kids ate burritos, stuffed peppers, barbqued annything and pretty much whatever we put on the table in front of them.
I believe our families make us what we are but that isn't necessarily our genes, it's more about our neighborhoods.
Now I'm hungry.