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.
Ryan’s Hope - Apocalypse in Increments. It’s from 2006 but I didn’t discover it until around 2012, by which point they’d already rebranded as The Reaganomics and adopted a more pop-punk sound that didn’t resonate with me.