Cool I was wondering as not all settings have such cultures , so if a player wanted to play a High Warrior monk or Warrior Monk what would their options be.
Actually, they could come from any culture.
As mentioned before, there are the Changramai Monks, which is a relatively famous school, and whose Monks tend to find work as bodyguards.
There are also a number of cultures who have monestaries, or you could have the player's background having him being raised/trained by a wandering Monk or Warrior Monk.
Just the fact that there are such, and that they are widespread enough and do travel about, makes it possible to include them in any are you want.