I really liked Sonic’s 2nd stage, as it wasn’t in Brawl but it did show up in Smash 4. It’s back for Smash Ultimate. It’s based on a level in Sonic Lost World. Which is one I haven’t played
It’s very similar in looks to Green Hill Zone but with its own twists. I actually prefer it to the Green Hill Zone stage.
As it’s big without being huge, and the right side of the stage has a windmill which changes the way you can attack or be hit.
One of my favorite stages not just for the Smash 4 era, but for Smash Bros. in general.