What are the best titles written by multiple authors?
I've been recently thinking about the early 2000s Green Arrow run. Specifically, how amazing it is that between 3 primary writers and a handful of guest writers, they were able to tell one coherent ongoing story about Ollie building himself back up from the dead all the way to getting married. It's a fantastic saga. Smith, Meltzer, and Winick pass on the battons to one another seamlessly while also maintaining a high level of quality.
I started to wonder if there are any other ongoing titles written by multiple people that are able to tell a compelling overall narrative and maintain a consistent level of quality?
The only other examples I can think of are Hellblazer and Swamp Thing. I know they both have some low points and tangents, but they also both manage to land the plane in a compelling and satisfying way.
If you can think of any, I'd like to know. Especially if you can think of better examples than what I've come up with.