I guess it depends on what you have in mind. Although Jonathan McAnulty did the work, not me,
Way of the Samurai, one of the products for the
Kaidan setting of Japanese horror (PFRPG), which is my published homebrew, has 3 samurai orders specific to the Empire of Kaidan - the
Order of the Shogunate,
Order of the Undying Emperor, and
Order of the Tajiya (this one is kind of a "paladin" order of ronin).
Well, a lot of the stuff in my campaigns have a lot of influence from Narnia, so what would you suggest for orders such as...
Order of Aslan: An order of men and women who fight to spread Aslan's way through all the lands of the world. The order abstains from violence unless it is in defense of people. Other classes can join the order, but do not gain any of the benefits a Cavalier gets per lvl advancement, but gain services exclusive to members and a +2 to diplomacy checks against members of the order unless it is for an immoral action disdained by the order.
Order of Calormen: Finally rid of the Tash cults (I know that never happened in the books, I rewrote the lore to fit my campaign better), and the way of Aslan in their lands, the Caloremen of Calormen are finally glad to have rid themselves of their slavery (again, campaign lore), but many are wary of their new allies. Not trusting strangers in their land and of other nations, they fear the risk of another nation, whether under the influence of a dark evil as before, or simply an imperialist nation, swarming and putting them back in their bonds. The Order of Calormen fight for Calormen's safety, sabotaging nations and nobility of other nations they feel put their desert homeland in risk, and root out cults, witches and other evils in their own nation. Inquisitors, paladins, rangers and rouges are welcome into the order, but do not gain any class benefits, but do gain a +2 diplomacy roll towards members, excluding immoral actions unless for the good of Calormens nation.
I also have other oders in mind, but you get the idea. I thank you for your help though. I'm worried about balance mostly.