Apologize for bumping. There's more to the subject. I'm seeing a lot of people who would be interested in the same function. And there seem to be multiple projects trying to cover it.
Here is a reddit, albeit not a good one.
https://www.reddit.com/r/wowaddons/c..._that_show_in/
https://www.wowinterface.com/downloa...otes.html#info seem to be the closest match, but it's not for classic.
The addon that I stumbled across is not among these mentioned however. The one I saw looked colorful like an RP addon with nice tooltip notes. I realize I may have found this for retail or vanilla.
Also one crucial detail is that it should not be based upon friend/ignore list.