After much research, I’ve put together this list. Please reply with corrections or additions and I will update it as a “master list”.
Generic
Meatball
Croman
???
???
Venthyr
Ayeleth
Dug Gravewell
Kaletar
Stonehuck
Thela Soulsipper
Nerith Darkwing
(UPDATE: I just got Simone for getting a certain number of renown (17 iirc), confirming that she is NOT a Torghast follower)
Necrolord
Ashraka
Gorgelimb
Assembler Xertora
Rattlebag
Velkein
Talethi
Nightfae
Blisswing
Chalkyth
Duskleaf
Karynmwylyann
Lloth’wellyn
Yira’lya
Kyrian
Hala
Ispiron
Kythekios
Telethakas
Teliah
Molako