I was gonna comment on the items but realized that Buzzfeed just listed out the things people on Reddit said to some random's question, and didn't even fix the typos.
This topic is not for me as it's clearly focused on USA alone, but the mention of ambrosia salad reminded me a dessert with the same name:
Made with caramelised sugar, eggs, milk, citrus juice. Iberian in origin, still fairly popular here in southern Brazil.
On chicken Kiev: I know that the dish is supposed to be fancy and all of that, I've seen Marco Pierre preparing it, but frankly? The idea of a deed-fried dish filled with butter definitively does not please me.
Brains and eggs seems very wrong lol. I'm assuming health reasons are why it's no longer a thing.
I have eaten or seen a number of these things on the list. However, a few are things my parents would eat or do make and eat from time to time. I often wonder how many of these dishes I'll continue to make or if I'll stop having them once my parents have passed on. Weird to think about. Sorry for the existential thought.
This list also made me think of local bakeries. We have them in my city, but to go to an actual local, not corporate owned bakery, I think I would need to travel at least 15 to 20 minutes by car? I would love to be able to get fresh pastries.
I've made 'seafood' newburg dishes at home at least twice in the last few years (crab and shrimp). I think I like using Harveys Bristol Cream Sherry more than Cognac and serving it on rice is easier than any pastry/bread-y thing. The above has a link to a standard recipe on All Recipes, but I'll put it in the below list, to show how the other two vary.
All of this (except the jello-o abomination) looks so good but the article barely explains what the hell is in it!
Never heard of half of these as a european, seems like very 50-70s US type food. I'm gonna have to make one of these at least lol. (The rumaki one looks so good)