Powers & Abilities - Who used haki and who not?

We know prior to the timeskip we did not see hardening or CoA at all. CoO at least was hinted at (breath of all things, skypea, all the sensing/feeling

My understanding of All types of Haki(+Advanced) So far. Spoilers Anime Only dont click. : r/OnePiece

Powers & Abilities - Foreshadowing of Zoro's Conqueror Haki

My understanding of All types of Haki(+Advanced) So far. Spoilers Anime Only dont click. : r/OnePiece

If armament Haki is used to negate devil fruit powers, how come Luffy is able to use his rubber powers along with Haki as Haki should negate his devil fruit power?

Who used Armament Haki first in One Piece? - Quora

One Piece: All Haki Types and Its Subforms (Explained)

One Piece: What Exactly is Haki? Explained!

I have taken everybody's advice and made changes to the haki diagram : r/OnePiece

One Piece: Haki And Its 12 Subtypes, Explained