[alexisread]

It looks like you've looked over a number of languages, but I don't see anything about Forth, Forsp, Ante, Steps, Austral, Wat or Vale? I'd suggest they all have useful components to steal from :)

https://github.com/ablevm/able-forth

https://xorvoid.com/forsp.html

https://antelang.org/blog/why_effects/

https://tinlizzie.org/

https://news.ycombinator.com/item?id=43419928

https://github.com/GiacomoCau/wat-js/tree/master

https://verdagon.dev/grimoire/grimoire