We don't need a guide on how to moderate, streamers have to not be fucknuts and pick people to be mods that are trustworthy and actually read chat. Honestly, if you make people mod and they don't moderate your chat well enough, find better mods or don't be surprised when your chat is awful.
Every streamer has a different tolerance for how much dumb shit they can handle, so find mods that understand that limit and you're set. No guide necessary.
You can't completely police the internet yo, raise your dongers