What is a pronoun that renames?

A pronoun that 'renames' may be a subject complement, an object complement, or an appositive.

A subject complement is a noun, a noun phrase, or a pronoun that follows a linking verb and renames or restates the subject.

Example: My neighbor with the Mercedes is him. (neighbor = him)

An object complement is a noun, a noun phrase, or a pronoun that follows a direct object and renames it.

Example: They announced the winner, you. (winner = you)

An appositive is a noun, a noun phrase, or a pronoun that renames another noun right beside it.

Example: The campers, everyone who participated, will have to help with clean-up. (campers = everyone).