Go, Read: Joe Gross' Massive 50 Best Non-Superhero Graphic Novel Slideshow Over At Rolling Stone
That's an interesting list. The thing that intrigues me most is that this is an art/alt focused list that is being done since the turn of the century, a time during which some reputations have grown and others have shrunk. Or some have just grown. You also have Los Bros at #1, and as we've seen there are some attempts at canon that exclude those two entirely which I think is a travesty.
Another thing about such a list is I only have two superhero books in my top 50, I think, and maybe only one, so this is like excluding a relatively minor movie category: "Top Non 'Florida Western' Films." Well, not really, but you get the idea.