Pronoun Dilemma - "The winners of the contest were Morgan and me / Morgan and I [duplicate]
"Me".
"The winner of the contest was me." → "The winners of the contest were Morgan and me."
"I was the winner of the contest." → "Morgan and I were the winners of the contest."
You could of course say, "The winner of the contest was I." It's grammatically correct. (A subject complement.) But personally I find it sounds a little dated. And transferred to two winners ("Morgan and I") even more so.