I don't have a list of CCBill only sponsors, but if you check the table on my site for the sponsors with hosted movie galleries, then click their name, it will tell you who they process with on each individual page.
http://sponsorhostedgalleries.com
(The ones I have listed as CCBill are the ones that actually use CCBill to send the checks, not the ones that use them as part of a cascading billing system.)