I actually did use sub.rehab when first coming here, although it may not be obvious by my account history because this is a third account (migrated from kbin.social to kbin.cafe to help out with decentralization/not overloading the big server, now I'm on kbin.run because the instance owner of kbin.cafe disappeared). Searching again today gives only a Squabble link when I look for r/rabbits or r/bunnies alternatives. I can do nothing to fix this because submitting links is currently disabled.
This is the first I'm hearing about Lemmy Explorer, possibly because I'm a Kbin (well, now Mbin, a Kbin fork, because my instance owner swapped to that. Currently trying to find a small instance with an active owner that still runs Kbin, so not the big flagship kbin.social) user. Thank you for sharing.