Clojurians Log v2

have you tried https://github.com/justbur/emacs-which-key or completion frameworks like https://github.com/abo-abo/swiper? They both have helped raise the discoverability of keyboard shortcuts for me.

I was just about to recommend which-key.

I'll mention this here as well - here's CIDER's refcard https://github.com/clojure-emacs/cider/tree/master/refcard