When you watch the 2nd replay of the Adams catch, he gets two feet down then gets a very small step in before his knee hits the ground. Going back to the Likely play in the endzone for the Ravens, that third foot down while upright is enough to confirm possession. So once his knee hits the ground he's down. He does need to survive the ground with possession.
When you watch the Cooks play, he catches it while leaping, gets two feet down but immediately is going to the ground. So he does need to survive the ground with possession and obviously does not.
Rodgers tipped the ball up, then caught it with both feet down, never took a step or made a football move and had it ripped away from him. 100% agree with Capaholic that this should've been an interception and the refs lied about it in the pool report.