Well you may want to mention stage0
https://savannah.nongnu.org/projects/stage0/
it starts with just a 280byte hex monitor and builds up to a rather impressive lisp AND forth, while building tools such as a text editor and line macro assembler along the way
rain1 started a page for people interested in bootstrapping or countering Karger's attack. Several of us are putting as many links as we can find to small, human-understandable tools such as compilers. I added some formally-verified or otherwise justifiable ones (eg 25-core CPU ain't gonna be simple).
https://bootstrapping.miraheze.org/wiki/Main_Page
https://web.archive.org/web/20170724144929/https://bootstrap...
We're focused on content right now over presentation. So, it will look rough. Hope you all enjoy it or learn something from the projects.