One could even consider Scheme as more widely used than CL.
The biggest production use case for Lisp today is to learn Lisp.
The biggest use case for Scheme, CL, or Racket is to use to learn Lisp. Racket that way was quite successful.
With all this going on now. Scheme is the only serious Lisp for learning purposes. What new in sights will Rhombus provide here? The biggest use case for trying out scheme was while working through books like SICP.