Core of Yugoslavia, still lives on in cultural space, where music, movies, and literature are consumed in all ex republics. Except probably Kosovo, which was not part of serbo-croatian linguistic space. But even in Slovenia and Macedonia there's a significant part of population which at least understands common language. And it's not only about language, there's lot of shared mentality and history from Yugoslav period.
> Except probably Kosovo, which was not part of serbo-croatian linguistic space.
The Albanian speaking countries really punch above their weight for English language pop stars with global presence. ~7.5 Million Albanian speakers globally gave us Bebe Rexha, Dua Lipa, Ava Max, and Rita Ora. 22 Million Romanian speakers for a comparable post-Communist community and I don't think I know any pop stars with that background off the top of my head.
Kusturica's movie "Underground" captures the Yugoslav vibe quite vividly, highly recommend