Can I receive an AP TL with more than one sponsor?

Yes. This could occur if an AP has a TL with one sponsor and a second sponsor files an application for the AP to be associated with it as well. The same will be true if the individual is applying to be both an AP and a FB/FT. If the applicant is otherwise eligible, the fact that the applicant already has one TL will not prevent the applicant from obtaining additional TLs.