At a trustee’s foreclosure sale, the buyer receives a deed.

A sheriff's deed is issued following a court-ordered, judicial foreclosure sale conducted by the county sheriff — a process rarely used in California because the deed of trust and non-judicial foreclosure is far more common and efficient.

A tax deed is issued by a government entity when a property is sold due to unpaid property taxes, which is an entirely separate process from a lender's foreclosure sale and has nothing to do with mortgage default.

A quitclaim deed transfers only whatever interest the grantor may have without any warranties, and is typically used in voluntary transfers between parties — it is not the instrument used to convey title at a foreclosure sale.