Chimer worshiped Daedra, specifically Boethia, Mephala and Azura.
Yes, I should have referred to them as having once been Altmer instead of Chimer, the point being that all Aldmer decedents once worshipped the Aedra panthon. True though that the Chimer worshiped the Daedra Princes rather than Aedra.
Still, the idea that Alduin/Akatosh/Auri-El can be different things to different peoples, with even some Nords seeing Akatosh/Alduin in different ways (some being pro-Imperial Cult, others pro-Nordic) is an intriguing direction to take. More intriguing than anything in Oblivion.