Resolving the misunderstanding about future sunless

So ive been seeing quite a few people say that future sunny, the one sunny talked to in the 3rd nightmare, was transcendent. While we don’t know for sure due to the possibility of future sunny wearing weaver’s mask, he displayed powers that we know saint sunny doesn’t have, which is being able to control other people’s shadows. This is a pretty big sign that hes above transcendent and likely supreme. In addition to that, we know that Astarion, a supreme, failed to reach the tomb of Ariel, so the idea of a saint, even one as strong as Sunny, reaching it is ridiculous. Also, Sunny is only 1 step away from supremacy