Baritone for 1.12.2
I've noticed that 1.12.2 doent have a addons maketplace and would be awesome if baritone could be added! I've seen that baritone works for 1.12.2 and would be awesome to see it working.
Baritone for 1.12.2: https://github.com/cabaletta/baritone/issues/1343
You're correct, there is no addons marketplace for any version besides fabric.
I don't think that this will be a priority, as you can just run it as a Forge mod already.