Might be a bit late to the party, but I'd like to pitch a wizard's wizard (leaning towards an elf atm).

The character, a recluse scholar by nature, ended up joining the party, got swept up in the heroics, and then found that she couldn't just return to her books.

I'd imagine she spent some time adventuring and then found a political posting advising some noble type.

[hr]

Related, I'm curious about what examples of Eldritch, Chaos, and Dark arts magic would be?

No issues sticking to less taboo magic (whatever that specifically means for this setting).

Usually I just kind of crib from DnD for inspiration in terms of spells and schools.