I’ve been researching treatments, and there are some good links in this article. Not everything is what I’m looking for, but the treatments for Halloween H20 (7 pages) and Batman: Year One (2 pages) are useful. Cameron’s scriptments are unique to his working style, not really documents I would emulate as a sales tool. Craig Mazin’s Short Circuit is written in a style I like, but at 40 plus pages, it’s a bit much.

See more at
https://www.finaldraft.com/blog/film-treatments-and-outlines-that-every-screenwriter-should-read