Jens Axel Søgaard is cool and involved in many things. We collaborated on SICP support.

Original developer of Whalesong was Danny Yoo. https://www.hashcollision.org/whalesong/

There was also this: https://docs.racket-lang.org/racketscript/

Dave Herman worked on various JS-related libraries for Racket (or PLT Scheme) before he was involved with Rust.

ah that's right! apologies