To make a floor item with y-sort, you just set the origin point at the top, rather than the bottom. This works. However, I cannot for the life of me figure out how to make my shadow clone appear above all the floor items, and yet, under, rather than in front of, the player. I tried putting the origin just slightly below, but that didn’t work. What should happen is that if the shadow’s origin is below the carpet’s origin, then the shadow is above the carpet, but that doesn’t seem to work in this case, as you can see.
Don’t use y-sort behavior on the clone, manually set it’s Z depth to the Z of the player - 1 instead. This will keep it under the player but above the other items
I am surprised I didn’t consider this.