Well I wanted to share a stage I made with you guys, but I can't? I can't find an ID anywhere for my own stage, nor can I even see my "yeah"s, plays, or stats of any kind outside of the phone app. This whole thing is so half-baked. Why can't I copy and paste? Why can't I change the stage size or the background once I've started? Why can't I see more than a handful of stages at a time in the Shared Content section? How is anybody supposed to find my stage? Why can't I see stuff made by my Switch friends? Why can't I see the Mii Fighters I uploaded AT ALL, even in the phone app? BAH!
EDIT: Found some answers. They're dumb. You can find your own stages by searching, choosing "details", and scrolling right until you see "Creator", then you can select from options that include "friends" and "you".
Here's mine:
