Warning: This article contains SPOILERS for Conclave!The director of Conclave explains why Cardinal Benitez chooses the name Pope Innocent at the end of the film. Led by Ralph Fiennes and directed by Edward Berger, the movie, based on the novel of the same name by Robert Harris, follows the titular assembly of cardinals for the election of a Pope, as it winds through mystery and scandal. Several favorites are ruled out by said scandal and controversy until a dark horse wins the race, Cardinal Benitez (Carlos Diehz), a mysterious cardinal who served in Kabul.

https://screenrant.com/conclave-movie-ending-new-pope-name-innocent-director-explained/