It's YouTube so not all of these films are in great quality but I've tried to keep it decent.
I haven't had the time to organize this list and I probably won't since so many is found all the time.
I won't also promise that all of these films are great or even good.
Short silent films (one Protazanov feature): www.youtube.com/channel/UCkmnHTERm8H6Ze3sr9B07-g/videos
Egyptian films 12-15: www.youtube.com/user/eros36x/videos?sort=dd&shelf_id=0&view=0
"The Romance on the Screen" - Chinese classic by Bugao Cheng (no clue about original title): www.youtube.com/watch?v=llKSYgUCruQ
40-52: Studio Filmowe TOR for Polish films
Rarer Akerman: www.youtube.com/user/pyramidheaddavid/videos
Other similar lists by other LB users:
Fariz Akbar's "Every Full Feature Films in YouTube with English Subtitle": letterboxd.com/jonijtr/list/every-full-feature-films-in-youtube-with/detail/
3rdRevelation's "YouTube Collection" (note, last updated more than year ago): letterboxd.com/3rdrevelation/list/youtube-collection/
TheGiant Claw's "YouTube Watchlist": letterboxd.com/thegiantclaw/list/youtube-watchlist/page/3/