My first thought was Gal Gadot's "We're all in this together." video where a bunch of Hollywood types covered John Lennon's "Imagine" during COVID.
Gal Gadot hasn't signed.
And I notice Ellen Degeneres (who stood out for her creepy, fake smile in the video and reputation for being a total bitch off-camera) isn't on the list of 1476 names.
Of those who were in the video, Pedro Pascal, Dawn Porter, and Mark Ruffalo are the only ones on the list.
Oprah "Watch It Burn" Winfrey hasn't signed, either.
More celebs were in parodies of Gadot's video than were in the original. Hell, Sarah Silverman was in both the original and the parody set to Weird Al's "Eat It".
And neither Sarah, nor Weird Al have signed. Maybe Al doesn't know about it yet? He's more like force of nature than a mere celebrity at this point.