There's a closed FB group called Principia Carnivora, which I spent a lot of time on when eating Carnivore.
https://www.facebook.com/groups/PrincipiaCarnivora/
Or even better, I just spotted a new one by one of the early adopters - for The Paleolithic Ketogenic Diet, which supports people who eat organ meats. Not all of the original group are keen on those.