Fennel is phenomenal, and is the reason I switched from chicken scheme to clojure/babashka despite hating the JVM. Neovim config, Wezterm Config, and various scripts to do things are all now written in fennel. I've also used it for game dev using Love2D.
It's a great great language, and fixes a LOT of the issues I have with Lua.
It's a great great language, and fixes a LOT of the issues I have with Lua.