Please change the view of the list to Grid View for a detailed reasoning why I chose these movies.

After thoroughly watching either all or more than half of these directors' filmographies, I'm boldly committing what some may call blasphemy by crafting a ranked list from their best movies, picking just one from each director that I consider to be their Magnum Opus, rather than my personal favorite. My favorites may differ, but these are the films I deem their best work.