Rearrangement mechanical puzzle

Categories of rearrangement mechanical puzzles:

Subgroup 1
Cube puzzles and related puzzles:

• 3x3x3 cubes (e.g. Rubik's Cube)
• 4x4x4 cubes
• 5x5x5 cubes
• pyramids
• balls
• barrels

Subgroup 2
Marble-moving puzzles:

• to be filled[?]
• to be filled[?]

Subgroup 3
Note that not all wire puzzles are disentanglement puzzles.
Categories of rearrangement wire-puzzles and related:

• wire puzzles
• wire-and-string puzzles

Subgroup 4
Others:

• to be filled[?]
• to be filled[?]