Compared to the Japanese names
Ninja
Kemuri Dama (lit. Smoke Ball): Suppresses enmity generation for target party member.
Kage Watari (lit. Crossed Shadow): Transfers enmity from the ninja to a target party member.
Issou (lit. Two for One): Buff which powers up the next weaponskill.
Mugen Sandan (lit. Three Part Illusion): Three-stage physical attack skill.
???: New weaponskill finisher for Gust Slash combo which prolongs an active Huton effect.
Smoke bomb = Kemuri Dama
Shadewalker = Kage Watari
Dream Within a Dream = Mugen Sandan

Those are pretty much for sure.

Duality might, indeed, be Issou. But I also feel like Armor Crush sounds better for something that increases your weaponskill damage to the enemy.
So one or the other is the Huton refresh skill.

The floating swords look like they're from FFXV.
We should totally grab one at a time and slice the boss for the actual execution of the LB, like the original FFXV trailer. Though I expect they'll just be projectiles.