I didn't include webkit since it's a forked KHTML, which wasn't theirs.

I didn't include Linux because it's just a Unix reimplementation, not theirs.

or:

I didn't include Firefox because it's just an NCSA Mosaic fork, not theirs.

The point being, whoever does most of the work and maintenance owns something, not who came up with some early predecessor.

Yes.

Entire timeline of JavaScript engines.

https://egbert.net/blog/articles/javascript-jit-engines-time...

There's hardly anything left of that.