Like the other commenter said, you've got your various hard/soft combinations (there's definitely hard/soft carpeting, for instance). Synthetics and rubber are all over the place.

Outdoors: a wet field is definitely different than a soft field and a frozen field is different from a hard pack. You've also got your various snow amounts.

"Mushy" is almost universally bad, from wetlands to wood to computer lab removable flooring.

Good things I have found to stand on are large natural rocks, fine-grained beaches, and deeply carpeted bedrooms.

Marble, tile, hardwood, softwood(?), vinyl, stone, smooth concrete, textured concrete, short carpet, long carpet, grass, turf, sand, asphalt, gravel, hay, moss, plastic, foam, rubber. Plus the combination of different subfloors.

Lots of unique floor feels.