Roll cancel clip
For the purpose of this wiki, we'll refer as "clips" as anything that allows you to go out of bounds or go through a barrier (walls, doors, collision objects).
Roll Cancel Clips (RCCs)
Probably one of the most notable forms of clipping in Super Mario Odyssey. RCCs require inputs in a quick succession and, more often than not, a precise positionning of Mario in order to clip. Some of the most notable ones would be Inverted Pyramid Clip (IP clip), Snow clip (Upstairs and Downstairs) and Metro Doors (mainly used for Luigi's Balloon World).
In order to execute this glitch you need to be positionned just right, execute a ground pound (jump + Z), initiate a quick roll out of that ground pound (X or Y) and immediately cancel it (Y+B or X+A).
Moon Clipping
Moon Clipping is another very effective way of going out of bounds with the caveat of being a one try trick. Missing it on the first try will make it impossible to retry as we need the Power Moon to get through the wall.
In order to moon clip, you need to execute a backflip and cancel the backflip animation with a capthrow right as you collect the power moon. This will make Mario's animator to be confused as it has to shuffle between 3 different animations and move Mario towards the wall just enough to make it past its collision.