List all teams in all UEFA Champions League Finals that have taken place so far?

As of October 2023, the teams that have reached the UEFA Champions League Finals are: Real Madrid, FC Barcelona, AC Milan, Liverpool, Bayern Munich, Ajax, Manchester United, Inter Milan, Benfica, Chelsea, Borussia Dortmund, FC Porto, Olympique Marseille, Nottingham Forest, and Celtic, among others. Real Madrid holds the record for the most appearances, while clubs like Barcelona and AC Milan are also frequent finalists. Each final has showcased a variety of teams from different European leagues, contributing to the tournament's rich history.