Yes, I'm well aware that the right sidebar is having a section depicting the supported versions, but there are a few issues I have with it:

1. It is after the large "does not support" section. And given the laziness of people, you can assume they won't bother scrolling down to check the supported versions.
2. It just looks ugly. The usage of emojis (And unicode ones of all things) is a bad solution. It makes everything look worse, especially when considering that the displayed emoji depends on the OS you're using.

Displaying the supported version(s) a download may provide would help in eliminating questions such as "Does EssentialsX support X?" because that question is answered directly in the download showing it.

The question now is, how would you do this without the need of manually doing it yourself?
Perhaps have the jenkins build an extra file with info that the website could grab (if that isn't a thing already) to then display.

Also, regarding the sidebar: Maybe consider going away from emojis and instead use SVG icons from fontawesome or another provider. You could then even replace the list dots with the icons themself for better-looking lists.
But that's just a nice to have idea.