Structuralism
Structuralism was an intellectual movement most active a couple of decades after World War II, but I think it’s something people with a certain intellectual temperament gravitate to. I certainly did when I was younger, though I no longer do.
I need a short summary of it that I can refer to. I could just drop a link to Wikipedia or the Stanford Encyclopedia of Philosophy, but I want to highlight certain features that are important to how I think of it.