It’s somewhat amazing what one can find in the Archive.org site these days. Lately I’ve been stumbling on full movies. Here are some examples (subject to changes and additions):

Berlin: Symphony of a Great City, 1927
Man With a Movie Camera, 1929
Harvey, 1950
The Grand Budapest Hotel, 2014

Akira Kurosawa:
Seven Samurai (Shichinin no samurai), 1954
The Bad Sleep Well (Warui yatsu hodo yoku nemuru), 1960

(Tony Zhou, “The Bad Sleep Well (1960) – The Geometry of a Scene”)
(Tony Zhou, “Akira Kurosawa – Composing Movement”)
(Tony Zhou’s “Every Frame a Painting” account on YouTube)