How many have you read? Like all lists of this kind, it's plenty arbitrary and subjective.
I must confess that I thought Joyce's Ulysses was a bloated behemoth and a hot mess that isn't worth your time. I can be an insufferable masochist, and even I could not force myself to get past the first half of this miserable monstrosity. If you want Joyce, do yourself a favor and read A Portrait of the Artist as a Young Man.
Wuthering Heights is a bit of Gothic nonsense with two of the worst characters I've met in literature. Heathcliff and Catherine are both terrible people, and they pretty much deserve each other. There, I said it. If you must read a Bronte, read Jane Eyre.
Read more Jane Austen, please.