According to TF's Walker, all the animations in the teaser are in the game in some way or another, except the spy animation, which was stuck in because they don't have a decent disguise effect finished yet.
The medic is a little bizarre though. As someone pointed out on the shack, the guy's not any sort of combat medic: he's like, a real doctor. With an office somewhere and year old magazines and a dumpy secretary. Seems sort of out of place. He looks more like he's going to pull out a tongue depressor than a shotgun.