All explorer warriors get 100% stance passive.
The explorer mages get 50% stance from Infinity.
The explorer archers do not have any natural stance.
Buccaneer gets 90% stance from Super Charge.
Corsair gets 60% stance from Pirate Style and has 100% stance in Battleship Bomber.
Cannoneer gets 80% stance from Pirate's Spirit.
Night Lord does not have any natural stance.
Shadower has 100% stance for ~30 seconds after using the first hit of Assassinate without using the second.
Dual Blade gets 90% stance from Thorns.
All resistance classes, including the demon classes, have 100% stance. (except maybe for Wild Hunter while not riding jaguar.)
Xenon has 40% stance from Multilateral, 90% with Offensive Matrix.
Mihile gets 95% stance, 100% from his link skill.
Dawn Warrior gets 100% stance.
Thunder Breaker has 100% stance when chaining skills.
Wind Breaker has no natural stance.
Flame Wizard has no natural stance.
Night Walker has no natural stance.
Kaiser has 80% stance after charging his Morph Gauge, 100% stance in Final Form
Angelic Buster gets 40% stance with Iron Blossom, 80% if also using Power Transfer Shield.
Hayato has 100% stance when using his Sanrenzan skills.
Kanna has 80% stance from Breath Of The Unseen.
Aran has 90% stance from Freeze Standing.
Evan has 90% stance from Onyx Will.
Mercedes has no natural stance.
Phantom has no natural stance.
Luminous has 100% stance while in equilibrium.
Shade has 100% natural stance.