SL levels and levelpacks were recently moved to "Levels for other engines." However, I'm guessing that SL users are far more likely to go to dedicated SuperLemmini board in the first instance for finding new packs.
Granted, namida has pinned
this post to the board, informing users of the move, but I still think it would make more sense for them to be grouped with all other SL-related forum posts.
I'd be happy to make a post listing the available packs (and of course providing links), and perhaps that could be pinned instead of (or, as well as) namida's post, depending on Forum consensus as to where they ought to be listed. I'll wait until a decision is reached before doing this, though.