One of mine is Commit This to Memory by Motion City Soundtrack. I basically took the title verbatim and know the album word for word. And while I would love if it did, the rest of MCS’s stuff just doesn’t hit the same way.
And if you’re not an album person, maybe a period of time in the artist’s work? Whatever works for you.
Remo Drive - Greatest Hits (which isn’t a greatest hits album) definitely fits the description. It’s extra sad since it’s their debut album, so it falls into your sophomore slump category. I respect the decision to not repeat themselves though, but I can’t help to feel like they would be able to make an album that both pleases the fans garnered from the first, and which isn’t just a rehash.