I think suckless.org is oriented around Unix, and especially Plan 9, and reflects a lot of what is at cat-v.org. Generally, it seems like it favors using 9base tools. But if you watch suckless youtube, they seem to say that they favor Vim and shells like fish and zsh, and several of them drift eventually to emacs (to edit their config files with).
But anyway here's some threads on it on the suckless subreddit:
<https://www.reddit.com/r/suckless/search/?q=lisp&restrict_sr=1&sr_nsfw=>