
I think most people like to stay as close to the line as possible. It's why you'll see people playing characters from Ishgard are VERY vague with their character histories, because we have very little info yet on that city-state. As far as the Circle of Knowing goes, all of its former members are now listed as Scions so I think it's safe to assume the Circle of Knowing was dissolved when Louisoux died/disappeared. I don't recall any reference to it in ARR, though I may have missed it.
I'm not sure why everyone thinks that the Circle were all mages, Yda is quite obviously not a mage and in fact she at times doesn't even seem all that bright, and Thancred is listed as a Bard even though he is absolutely nothing like a Bard beyond knowing a lot of tales and what not, he doesn't even use a weapon available by any class in the game (throwing knives).
In short it's better to ask questions and get clarifications, or err on the side of caution. Most people I've found tend to be wary of making assumptions or leaps when it comes to lore because you never know when they might change something and force you to retcon.
I'm not sure why everyone thinks that the Circle were all mages, Yda is quite obviously not a mage and in fact she at times doesn't even seem all that bright, and Thancred is listed as a Bard even though he is absolutely nothing like a Bard beyond knowing a lot of tales and what not, he doesn't even use a weapon available by any class in the game (throwing knives).
In short it's better to ask questions and get clarifications, or err on the side of caution. Most people I've found tend to be wary of making assumptions or leaps when it comes to lore because you never know when they might change something and force you to retcon.