Note the addon might say out of date, but if you load out of date addons it works fine.
The Scarlet Scourge uses Abomi-NATION to identify ourselves.
This addon displays Guild Notes as a tooltip on target or mouseover.
The addon also includes Identity 2 which adds your name in front of your chat messages.
Can be enabled for guild , party, raid chat messages, well basically any chat
How to setup the addon:
The Abomi-NATION addon is pretty simple to setup, to get to the settings you can either type /id in the chat box or find it by going to your esc menu in Interface->addons->abomiNATION ID2
the basic setup for what you need as an Abomination is really simple. To setup your name to work with guild chat you simply fill in the identity line and click okay button on the same line when your done typing your name.
if your using this addon as an abomination remember to type in the same name that you use on the discord.