What anime can be considered "the Evangelion of x"?

>the Evangelion of X

Nothing is the Evangelion of X. Wonder why? Well, Evangelion in and of itself is a very misunderstood show. It's not a show that hates it's genre, it's actually a show that grew out of Anno's own love for the genre, believe it or not. Anno has always been a mecha fan (he actively skipped class in college just so he could watch Space Runaway Ideon as it premiered), to say nothing about his love of Ultraman and other tokusatsu. Claim whatever, but the way it altered anime was mostly through popularity rather than innovation. It had slightly more consequences shown off than is the usual for the genre, and the twist ending was what kinda "made it" for more people, but the level of innovation is not on the point of something like Mazinger Z, Getter Robo or Gundam where these shows literally created whole new subgenres. Eva doesn't have that honour of creating the supernatural horror mecha show - that one goes completely to Ideon, it's major inspiration. Note that this isn't a denial of Eva's merits as a show itself, just the claim that it was completely revolutionary. It was more of a shot to the arm for mecha because the asset bubble happened to burst at the same time.

The same applies to Madoka - it's just a mahou shoujo show that happens to be somewhat more serious in it's approach and has a twist ending. And much like Eva, it definitely wasn't a definer for the genre like Cutey Honey or Sailor Moon were. Hell, you had stuff like Princess Tutu that precede it by a full decade or more.

tl;Dr: Calling some popular serious anime "revolutionary" is plain and simply shortsighted if you don't have the full knowledge of the genre's history.