Every movie selected by the Youtube channel Cinefix for their very knowledgeable movie lists.
Be sure to watch their videos as they actually mention a lot of other movies that don't make the cut of their lists.
Links to videos in the notes.
Films sorted by number of mentions, then by rankings, then alphabetically.
Films not on Letterboxd:
The Wilder Summer, #2 - Influences on the Film 'LA Times'
Daydream Believer, #9 - Influences on the Film 'LA Times'
Some lists have at least one entry which aren't films, they are listed here:
Surprising Actor First Performances
Most Epic TV Finales of All Time
Best Improvised Scenes
Most Important Film Movements of All Time
Most Influential Film Directors of All Time
Brilliant Moments from the Battle of the Bastards
Influences on the Film 'Lemon'
Best Cinematographers of All Time
Greatest Horror Movie Tropes
Most Personal Movies of All Time
Most Idiosyncratic Directors
Most Important Tech Innovations in Film History
Brilliant Offscreen Deaths
#Best Movie Teams of All Time (I'm not adding the entire Three Stooges filmography)
Some statistics:
Number of times films from each decade have been selected:
1880s - 1
1890s - 1
1900s - 3
1910s - 6
1920s - 31
1930s - 50
1940s - 55
1950s - 120
1960s - 189
1970s - 222
1980s - 272
1990s - 283
2000s - 314
2010s - 242
2020s - 42
Number of individual films per decade which have been selected:
1880s - 1
1890s - 1
1900s - 2
1910s - 6
1920s - 19
1930s - 20
1940s - 21
1950s - 60
1960s - 87
1970s - 96
1980s - 147
1990s - 136
2000s - 170
2010s - 182
2020s - 40
Years with the most individual films selected (15+):
35 films - 2013
28 films - 2014
25 films - 2015
22 films - 1987
21 films - 2006, 2000
20 films - 2008, 1983
19 films - 2011, 1995
17 films - 2001, 1992
16 films - 2007, 2004, 2002
15 films - 2019, 2018, 2003, 1997, 1986, 1984, 1979
Directors whose films are chosen the most often (5+):
53 times - Steven Spielberg
43 times - Stanley Kubrick
41 times - Francis Ford Coppola
39 times - Martin Scorsese
37 times - Peter Jackson
35 times - Alfred Hitchcock
25 times - David Fincher
22 times - Quentin Tarantino
21 times - Joel & Ethan Coen
20 times - James Cameron
19 times - Richard Linklater
18 times - Robert Zemeckis, Christopher Nolan
17 times - Akira Kurosawa
16 times - Charlie Chaplin, Rob Reiner, Ridley Scott
15 times - Michael Curtiz, Andrei Tarkovsky, Ingmar Bergman
14 times - Paul Thomas Anderson, Orson Welles
13 times - Victor Fleming, Billy Wilder
12 times - David Lean, Guy Hamilton
11 times - Otto Preminger, Wong Kar-wai, George Lucas, Sidney Lumet, Lana & Lily Wachowski, Fritz Lang, Wes Anderson
10 times - John Ford, John Glen, Sergio Leone, Sam Mendes, Terence Young, Ang Lee, Spike Lee, Jonathan Demme, David Cronenberg, John Carpenter
9 times - Woody Allen, Alfonso Cuarón, John McTiernan, Mike Nichols
8 times - Carol Reed, John G. Avildsen, Zhang Yimou, Brian De Palma, Brad Bird
7 times - Franklin J. Schaffner, Irvin Kershner, John Hughes, John Woo, John Landis, Roman Polanski, David Lynch, Hayao Miyazaki
6 times - Frank Darabont, Lewis Gilbert, Sylvester Stallone, Wes Craven, Roy Andersson, Michael Mann, Terry Gilliam, Charlie Kaufman, Lars von Trier, George Miller, Tim Burton, Spike Jonze, Hal Ashby, William Friedkin, Stanley Donen, Ryan Coogler, Terry Jones, Michel Gondry, Sofia Coppola, Mike Mills
5 times - Elia Kazan, Frank Capra, Gaspar Noé, John Huston, Martin Campbell, Richard Donner, Ivan Reitman, Liu Chia-Liang, Denis Villeneuve, Roger Allers, Rob Minkoff, Gene Kelly, Steven Soderbergh, Barry Jenkins, Federico Fellini, Katsuhiro Otomo
Directors with the most individual films selected (3+):
16 films - Steven Spielberg
12 films - Martin Scorsese
11 films - Charlie Chaplin*, Otto Preminger*
9 films - Stanley Kubrick
8 films - Robert Zemeckis, Richard Linklater
7 films - James Cameron, Christopher Nolan, Paul Thomas Anderson, Quentin Tarantino, Joel & Ethan Coen, Francis Ford Coppola, Wes Anderson
6 films - David Fincher, Ingmar Bergman, Ridley Scott, Rob Reiner, Spike Lee, Akira Kurosawa, David Cronenberg
5 films - David Lynch, John Glen, Billy Wilder, John Woo, Brian De Palma, Guy Hamilton, Brad Bird, Hayao Miyazaki
4 films - Hal Ashby, Jean-Luc Godard, John Huston, John Landis, Richard Donner, Sidney Lumet, Sylvester Stallone, Zack Snyder, Andrei Tarkovsky, Sam Mendes, Lars von Trier, Ang Lee, George Miller, John Carpenter, Denis Villeneuve, Steve McQueen, Steven Soderbergh, Sofia Coppola
3 films - Barry Levinson, Bryan Singer, Clint Eastwood, David Lean, George Roy Hill, Howard Hawks, Joe Dante, John Ford, John Frankenheimer, John G. Avildsen, John Hughes, John McTiernan, Lewis Gilbert, Mel Brooks, Norman Jewison, Oliver Stone, Orson Welles, Peter Jackson, Phil Lord & Christopher Miller, Robert Rodriguez, Roy Andersson, Sam Raimi, Stanley Donen, Terence Young, Tim Burton, William Friedkin, William Wyler, Woody Allen, Michael Haneke, Werner Herzog, Darren Aronofksy, Cameron Crowe, Wong Kar-wai, Michael Curtiz, Spike Jonze, Ryan Coogler, Pete Docter, Wim Wenders, Takashi Miike, Mike Mills, Richard Lester, John Cassavetes, Mike Nichols, David Zucker, Yorgos Lanthimos, Jonathan Glazer
* - note that Otto Preminger and Charlie Chaplin have inflated numbers due to categories in which many films draw.