So as granted class feats, at level 4 you get Ki Strike: Magic, at 10 you get Ki Strike: Lawful, and at 16 you get Ki Strike: Adamantine.

Each is described as:
Usage: Passive
All of your unarmed melee attacks are empowered with ki and are considered [dmg type] for damage reduction purposes.

Does one override the other, or do they stack? At level 16, is an unarmed attack a lawful magical adamantine attack? or just an adamantine attack?