Our images are not used to train Adobe's AI—but what images ARE used?

I was pleased to see that “Adobe’s AI Approach” (topic offered on app launch) “does not use your images or data to train our AI models. We are committed to safeguarding your creative work.”

But what images DOES Adobe use to train its AI? We’re not only concerned about our own work; we don’t want to be stealing anybody else’s, either. We want Adobe to be safeguarding everybody’s creative work.

Of course, anything done before the enactment of copyright law is fair to use. But obviously that won’t cover the gamut. So what is Adobe using? Does it purchase stock art with a specific license to use it for AI training? Does it have specific AI-training contracts with specific artists and photographers?

Bottom line, does AI have explicit consent for its AI training materials?