as title, so should be simple, the discordSRV version e.g. 1.19.0 doesn't mention in any of the docs which minecraft version e.g. 1.16.1

Because 1.19.0 wasn't built for 1.16.

and yet, none of the builds mention ANY version of minecraft that they pertain to, is a user supposed to guess, or annoy the community constantly with questions?

https://get.discordsrv.com/ will give you the latest release
https://snapshot.discordsrv.com/ will give you the latest dev build
That's all the information a user needs. They should always be on the latest build.

Yes it does work. The latest version works on MC versions 1.7.9 through 1.15.1 and onwards. There is nothing in DiscordSRV preventing it from working in new versions (usually)

so discordsrv is compatible with the newest version of minecraft? or is it untested? or being worked on? these are important details a user needs to know