Just a bunch stages I made a while ago.
Loud and abrai
Music: Yell "Dead Cell"
The idea was a low hanging stage with moving platforms in place of grabable ledges. It seemed to work in the bunch of test matches I did.
Clasico
Music: World Map (Pikmin 2)
Another test stage with no grabable ledges. The stair things seemed like they didn't work, but I didn't play this stage as much. It probably would do better raised up a couple blocks, too.
himalgam.
Music: Unfounded Revenge
The left side is close to the boundary and has a grabable ledge, the right hangs out near the middle and doesn't. I wanted a Japes-like ceiling for this course.
A flipped version with the grabable on the right would probably work better. This layout seemed to work fine, but flipped ledges would probably work better for Tethers since the right is the one furthest from a boundary.
Hyrule Terrace
Music: Ocarina Medly
Based on the left side of Temple. The only obvious problem is I used the tree thing to simulate the raised area and it creates a wall. The stage might be better served dropped down a few blocks as well and given larger boundaries if needed, but otherwise it's playable.
Giroman
The idea was a counterpick with fallthroughs as the main platform and conveyors to keep people up on them. The stacking is a bit excessive, and the stage gives obvious preference to characters without tethers. It could be playable if the conveyor speed is balanced, or by putting an edge at the left side but making it small enough that you couldn't sit and camp there.
amalgamate.
Music: Porky's Theme
Tried to make a stage with falling blocks that was playable.