According to Jeff, those cults allow for Sorcery: CA, Eurmal, Issaries, LM, and plenty of others. When I asked for the cpmplete list, I have been directed to the Gods and Goddesses book, but Orlanth is not in the list: " So if you want to become a sorcerer and understand Runes and Techniques, you can still worship Orlanth as a lay member or as an initiate of an associated cult that permits sorcery, but you can't initiate into HIS mysteries. Aeolian sorcerers worship Orlanth but are not initiates of his cult. Wizards are initiates of <AEOL> (or whatever we end up calling it). They worship Orlanth (and other gods) as lay members, but do not participate in Orlanth's mysteries as initiates. "