My hindbrain's immediate answer: I dunno. We should do a whole series reread with a special focus on this question (and maybe writing the personality quiz) to find out!

Me: DAMMIT BRAIN. We just started listening to the immediate sequel to 'Master and Commander'. Trying to read two series at once is the kind of nonsense that leads to past-history Rivers of London fic that you don't have brainspace to write right now. We have to rehome some of these plot bunnies before you keep spawning new ones!