My
final final predictions...
Yup. This looks very likely to me.
I don't think they are trying to misrepresent any of them by making them look like a character they are obviously not. This is supposed to be a high visibility video that they've put up on YouTube and distributed. It's going to get millions of views. It's an official reveal video not a just a one-off Boon Twitter goof, so I think people thinking that these are fake outs are not considering the potential fallout if they pull a bait-and-switch for such a high-profile promotional video.
The one that looks dead-on for Azrael really doesn't seem like it could be misinterpreted for anything else. So I'd say him, Manta, and Raiden are locks. Enchantress and Rorschach seem like pretty good matches. I'm very inclined to believe if the character silhouettes are altered in any way, what's there is accurate, but part of the models are just cut off or not shown like the Rorschach hat. I think they probably toyed with this per the image Boon posted, but for the final video decided just to go ahead and make Raiden obvious.
The only one I'm still iffy on is the Atom. The Atom seems like a very odd choice for a NRS game where they don't do a lot of crazy stuff with character sizes. Could be super boring without it. Even though that matches the pose of that promo shot pretty well, I don't think it's impossible that it could be Spawn's body without the flourishes or even someone else. I should probably just expect the Atom, though.
Also, if this is accurate, I except more DLC based on the polls he put up on Twitter where he teases Constantine, Spawn, and returning characters.