What are all of the legendary Pokemon without signature moves?

Question

Note: This is my question so here how I would like this to be answered:
To me Phione is a legendary
Moves that are shared among a trio are okay (sacred sword)

Comments

Doesn't matter if you consider Phione a legendary. People are entitled to answer without it if they don't consider it a legendary. Doesn't make a difference if it's your question or Merlin's. There's contradiction, and it's their decision which side they want to take.
You're also entitled to not giving a BA if you dislike the answer. Simple.

Answer 1

Zapdos
Moltres
Articuno
Mew
Raikou
Entei (non event)
Suicune
Celebi
Regirock
Regice
Registeel
Deoxys
Uxie
Mesprit
Azelf
Terrakion
Virizion
Cobalion
Type: Null
Tapu Koko
Tapu Lele
Tapu Bulu
Tapu Fini
Cosmog
Cosmoem
Kubfu
Glastrier
Spectrier
Ogerpon (to current knowledge)
Terapagos (to current knowledge)

Comments

i dont count phione as a legendary since you can breed an infinite amount of them.

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But I do, and I asked the question :P

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Deoxys has Psycho Boost as a signature move, and Ogerpon and Terapagos have Ivy Cudgel\Tera Starstorm respectively.

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so Nature's Madness and Mystical Power don't count?

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No, because those aren’t signature moves since more than one Pokémon can learn them.