These are the names of the guys who teach you the sword techniques and a list of the sword techniques they teach you.

Swiftblade: Spin attack, rock breaker, dash attack, and Down thrust
Grayblade: Roll attack
Waveblade: Peril beam
Grimblade: (You can find him in the SE corner of Hyrule Castle Garden by cutting the grass) sword beam Swiftblade the 1st: Great spin attack