In the modern Arrowverse, what are the Earths which are present in 2021. I would like to know about the number of known Earths present in the present timeline of Arrowverse.
After the Crisis on Infinite Earths story arc concluded in early 2020, there was only a small handful of Earths left remaining:
Earth-Prime (main Arrowverse): Arrow, Flash, Supergirl, Legends of Tomorrow, Black Lightning, Batwoman, Superman & Lois
Earth-9: Titans web series
Earth-12: Green Lantern film
Earth-19: Swamp Thing web series
Earth-21: Doom Patrol web series
Earth-96: Superman Returns film