Let's give this a whirl.

Imrahil, Amrothos, and my knight NPCs are on the way to Minas Tirith but haven't arrived yet.
Aergannel has just stepped off a boat and is in Minas Tirith?
Karigan is alternating between a shoddy drunken mess and superangry and occasionally actually -doing her job-.
Pippin is kicking around Minas Tirith being lonely and bored and planting greenery and stuff. I dunno.
Denethor is a ghost and is certainly available for visiting people >_>.

NPCS:
Elfhelm is... I don't even know.
The Archivist is being archival. I don't think that was supposed to be a verb but there you go. Pester him. Please. He's fun.
Nandir, my new baby knight NPC (aww so cute) is going to Minas Tirith with everybody else. Though he might stop random people on the street, you never know.