The Way of the Rift is a monk whose meditative practice teaches them about the very fabric of the universe - specifically, how to tear that fabric and hurl themselves from one end of the battlefield to the other!

The Way of Predation is for monks whose meditative practice has focused on the secrets of undeath, and the power wielded by might vampires.

The Way of Progress is for monks who've meditated on the ancient ways, and concluded that it's all a bit, well, ancient. You're still perfectly able to use the tools of your more staid brothers and sisters, but you're not afraid to whip out a smoke grenade or shock generator when the situation calls for it.