If your character is an historical figure from before 1925, may Jeeves know about them? If yes, would he be able to know about them vaguely, relatively well, or in-depth?

Different world and time frames, so Jeeves would certainly not. though funnily enough, the era for Legend of Korra and Republic City itself is inspired by cities from the late 1800s up to the 1930s.

May Jeeves know your character's name and face from the communicator archives?
Most of her comm replies and posts are public, save for a handful of threads which switch to private.

Is there anything on the public communicator archives that you would like Jeeves to have missed glancing over? Alternatively, is there anything in the archives that he might hone in on with relation to your character?
I'm easy here, nothing I'd be against at this time. If that changes, I'll let you know.

Are there any sensitive areas/pieces of information that you would like Jeeves to avoid/miss picking up in interactions with your character?
Not as yet. Some day, maybe the subject of her relationship with Tenzin might come up, but that won't be any time soon. XD

I'll post one of these for Carolina later.