I've heard it referred to as meta-modernism. the writer and director for everything everywhere all at once liked using that term to describe the movie.
Sounds a bit like the "john dies at the end" series, I've heard it described other ways but I think of it as cosmic horror comedy
A good example of what things are like I feel is the start of chapter 9 at mcdonalds(if you stop there it won't spoil anything) for the weirdness and then you have stuff like aiming a dog's butt at people like a gun and it being a deadly threat
I absolutely LOVE John dies at the end, wish they would make movies out of the rest of the books. In the meantime, do you have any movie/TV recommendations that are similar?