I've read that he'd wanted to just use Scheme, but that they needed the language to have "Java" in the name, as well as curly braces. So, we got Javascript.
Also, given that DSSSL was an early contender against CSS (and a great deal more powerful), we could have basically had Scheme there too. https://blog.cloudflare.com/the-languages-which-almost-becam...
Lastly, because S-expressions can represent everything that is representable in SGML/XML/(X)HTML, but more succinctly, we could have basically had Scheme instead of HTML.
Imagine if, instead of JS/HTML/CSS, we had... Scheme. I'm pretty sure that the alter universes where this happened also all have peace, warp drives, and working cold fusion.