Everything below the separator bar is a mirror of the "Find Alternatives for Ourselves Megathread: Third Strike" post by bettervanilla on the r/RedditAlternatives subreddit, found here.
It was last updated on 2023, Aug 6 at or around 1325 EDT. It may or may not get updates going forward, depending on how much free time I have (e.g. don't expect me to update it but I might if I have time). Also, if bettervanilla decides to move his post off of reddit, I plan to update this page to redirect to the new location.
Also found one more really nice list mentioned on the r/linuxmasterrace sub while trying to find where they are migrating to. Thanks to /u/ball_soup for sharing!