A very interesting interview of Guggenheim for Entertainment Weekly:
https://ew.com/tv/2020/01/15/crisis-on-infinite-earths-marc-guggenheim-earth-prime-ezra-mille
"The Crisis comic destroyed the multiverse and condensed everything into a single Earth. Here, though, you guys decided to reboot the entire multiverse. Why did you want to do that?
Basically, I promised DC and all the powers that be that if they just let me destroy all the various different shows in hour 1, I would bring them back in hour 5. I promised that I would put all of the toys back in the toy box once we were finished. For us, the most important status quo change was, of course, combining the CW shows into a single Earth. I like to think that I'm a considerate enough showrunner that I'm not going to destroy the shows of other showrunners."
(Then he talks about the relation of Earth-2 Laurel and the new Earth-2 on Stargirl, we will se that in the series finale; and much more, very interesting)
So it looks like that every Earths are restored, then?
At least, every Earths with a TV show/movie/cartoons associated with?