We made a change recently that subs not listed on /all are now also not listed on /all/new and /all/comments.
To counterbalance this and give these subs a bit more of a voice, d3rr has created a way to browse the subs that do not appear on /all.
You can click 'edit subs' at the top of the page, then the 'not on all' tab to see the sub list. Or just go here: https://saidit.net/subs/notall/
Many thanks to d3rr for this new feature! Enjoy!