These guys would be on the new earth I would assume.

Even when not set in the Mirror Universe, Star Trek also gave us almost-Earths such as;
A post-nuclear Earth containing Kohms (Communists), Yangs (Yankees), with the same landmasses, flags and important documents. Yeah, this is the one in the episode where Kirk is reading the Declaration of Independence in front of a US flag to cavemen... it's a very weird episode.
A world where Ancient Rome continued until the 20th Century, with slavery, televised gladiatorial combat and modern weapons. Also, we learn at the end was only just just starting to undergo a slow conversion to Christianity.
A Earth-like world where due to a nuclear and chemical war, everyone over the age of puberty ended up catching a plague and dying.
A planet that was inhabited by Nazis, waging a genocidal war against a neighbouring planet. Actually, this one emerged due to the interference of a human from the Federation who sought to try to "help" their society by introducing a "benign" form of fascism and it of course spiralling out of control... which considering he was a historian and should have had all of human history to show him that it doesn't work, makes him pretty terrible at his job.
A planet inhabited by tommy-gun wielding Chicago Mobsters from the 1920s. Like the Nazi world, this one was due to accidental interference when the highly imitative natives found a book left behind by a crashed ship about 1920's mobsters and decided to base their whole society around it... as you do.
And yeah, I watch way too much Star Trek...
