Yes, there is a top-down view player.
No, this cannot be converted into a side-view player.
There is a setting for player types called "verticalTilt", which by default makes the camera face slightly down towards you in third person. Rotondo's Smash TV player instead made this angle 90 degrees directly down.
There is no similar horizontal tilt option. I can place the camera to the side of your head, but it can still only face forwards, look up or down.
You can't control a player with the viewpoint on a spectator/F8 camera object, only another player. As a result, the v8 "2D style player" used a repeating schedule to move an invisible/tiny bot as a camera to the side of your head thirty times a second. This is as hacky as it sounds, was extremely laggy if more than three people used it at a time and crashed the server if you jumped into water.
There is no good way to do this.