hey so i haven't been getting a lot of players when i'm the host, so...
If you see "SMB0Goomba", it's probably something like the fridges thing.
If you see "SMB1BuzzyBeetle", it's normal. Ice Battle, Improved Battle*, STTA**, all that stuff.
So, at least you can expect what kind of things to be doing there.
*A new mode I made that changes the powerup and hazard selection.
**An old mode I made where the lobby plays all on the same team and they speedrun collecting 100-250 stars, depending on the player count.