Number 2 is doing something for me, makes me think somewhat of the more invasive street photographers like Gilden and Cohen.
The others feel a bit too snapshot. The words of Capa come to mind: "If Your Pictures Aren’t Good Enough, You’re Not Close Enough". I think the problem with the other 3 shots is that they feel too far removed from the scene and as a result there is no sense of interaction.
2 on the other hand feels as if he is about to turn to the camera, there is a sense of interaction which I feel makes it work.
However all of the above shots could do with having the exposure dialed down as many of the highlights are over exposed to the extent that a lot of detail is being lost.
There is definitely a spark of something here though, particularly if you can get more like #2.