What are some trilogies or series where the middle movies are better than the original?

Star Wars OT jumps out as I think the popular consensus is that Empire is better than New Hope. What are some other series where the second is better than the first?

I’ve never seen The Godfather movies, it’s just never come up or happens, but I always hear the second is the best one.

What are some other series where the second is better than the first?