Earth 1: Arrow, Flash (current), Constantine, Legends Of Tomorrow, Vixen, Batwoman
Earth 90: Flash (older series)
Earth X: Freedom Fighters: The Ray
Earth 38: Supergirl
Earth (unknown): Birds of Prey, Smallville, Black Lightning, Titans, Doom Patrol
Some other shows that aren't yet related would include
Gotham, which earth does this fall on, will it become a crossover and part of the arrowverse?
Lucifer, is based off of a dc comic so will this also end up as a crossover?
Titans will be part of the crossover this year, making both Titans and Doom Patrol part of the arrowverse