At a guess, their own, but given the comments from Patty Jenkins and others I guess it will be closest to Rucka's Rebirth arc, with Maxwell Lord replacing Veronica Cale as the person who manipulates Barbara Ann Minerva into becoming the Cheetah.

If that is so, I wouldn't be surprised if the Cheetah transformation doesn't happen until late in the film, leaving Cheetah as a major player for Wonder Woman 3 as well. But don't quote me on that