I’ve tested and found out what the arm variations do on mahito Normal: 3 DMG Normal Dash Blades: 2 DMG Teleport Dash Big Arms: 4 DMG Spin Attack (Big arms are slow but have alot of stun, and the spin bypasses block)
This one might not count but: jump, lapse blue max, fling them upwards, r/special Edit: also you forgot the shadow swarm domain invasion, jump + crushing blow, toad + nue + nue and that reversal red max + r can also trigger hollow nuke