If you’re interested in this stuff, the book, Class: A Guide Through the American Status System by Paul Fussell is an entertaining and insightful book (from 1983, so a bit dated in parts but well worth it).
https://en.wikipedia.org/wiki/Class:_A_Guide_Through_the_Ame...
Good quick read; I think most of it does hold up. Art depicting clowns or cowboys, probably lower class; threadbare but once-good Persian carpets and shelves of books, probably higher class. The "top out of sight" class is an element most people probably don't think of.