@Babilfrenzo, nice work on this!
Are you the original author of Adamantine Edition? It's my go-to version of m20.
Looking for the Free Microlite20/7x/8x/2020 Rules Downloads?
There are well over 100 free downloads of rules (and more) for Microlite20, Microlite2020, Microlite7x, Microlite 81, and their many variants in the Game Download Library area below. These files can be downloaded without creating a membership on this site.
GOOD NEWS on the OGL front. As of 27 January 2023, it looks like Hasbro/WOTC has completely backed down. The OGL looks to remain in effect and future D&D SRD will be under a Creative Commons license. Personally, I suggest everyone who can move away from the OGL as corporations (IMHO, naturally) are some of the least trustworthy entities on the planet when it comes to actually keeping their word, especially long term.