I have both a healing fetish and altism, but my main focus are my precious priests, all four of them and my druids. The other characters provide a mix of light relief and something for me to do when I want to play alone.
As I have all 50 of my available character slots full, I’ve made a conscious decision to only list characters who are important to me, i.e. the ones which I play regularly.
Erinys: ex-raider and ex-Nightelf, currently sulking in Orgrimmar.
Sprout: usually found hiding in flowerbeds healing people. Secretly wants to be like Whitemane and would kill for an aoe sleep.
Havisham: hates pretty much everybody and everything. Face melter and definitely not a healer.
I also have a bit of a thing for minipets, mounts and other such frippery.