How many types of Rubik’s cubes are there?

There are roughly two types of Rubik's cubes. The conventional ones are second-order, third-order, fourth-order, fifth-order, sixth-order and seventh-order. (It is said that two ninth-level ones have been produced. I have seen photos, but I don’t know what the real ones look like.)

The other type is the special-shaped Rubik’s Cube, which is roughly the following:

Mirror Rubik’s Cube (There are two types: single color and six colors, the difficulty of single color is relatively high)

Edge-shifting Rubik's Cube (there are two types of single color and six colors, the difficulty of six colors is relatively high)

Pyramid Rubik's Cube

Zongzi Rubik's Cube

Fan-shaped Rubik's Cube, two types. Also called SQ1 and SQ2

Pyramid’s SQ1 is a newly designed special-shaped Rubik’s cube that is currently hard to see on the market and very expensive! !

Ring-only Rubik's Cube

Hollow edge-only Rubik's Cube

Corner-only Rubik's Cube

Rainbow Rubik's Cube

Eight-Diamond Rubik's Cube (There are two types: three-layer and five-layer)