Question

What are all the attacks that hit the user with recoil damage?

Answer 1

Take Down, Double Edge, Struggle, Head Charge (Normal type)
Submission, High Jump Kick (Crash damage - only occurs if you don't hit), Jump Kick (Crash Damage) {Fighting}
Volt Tackle, Wild Charge (Electric)
Flare Blitz (Fire)
Brave Bird (Flying)
Wood Hammer (Grass)
Head Smash (Rock)
Shadow Rush, Shadow End (Shadow type, not in the main series)

Recoil

Comments

technically Struggle is a typeless move, as it hits all types for neutral damage.

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it's classified as a normal type move :P

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KoD is right. It's Normal but it's unaffected by type effectiveness, so Steel, Rock and Ghost take the same amount of damage from Struggle as any other type would.