At a place like bluesky where it's user generated content, if you follow art you're going to see a lot of the content artists want to make. For whatever reason, that's often apparently a lot of comic and manga artwork.

If there's a "fine art" category, that would probably be more in line with what you're looking for.

But not many artists these days work in marble or do museum-style paintings because there's not much of a market for it and they have to eat. So working artists are not likely to generate that sort of content in large numbers.