Previously (on HFS+ backups), I used TimeTracker to see how big each backup was, and which files were taking up the most space. With APFS TM, TimeTracker no longer works (and is no longer in development, it seems).
I've tried using
tmutil compare, however it seems to be mostly useless:
$ sudo tmutil compare 2022-08-16-114352 2022-08-10-205013 Must specify at least one item inside a backup.
I don't want to compare an individual item between two particular backups, I want to see how large all of the backups are, and which directories/files are taking up the most storage, such that I can delete the necessary backups.