Also what these dont have that you see on them up here is the HV insulators have a plastic "ice cream cone" that goes over them so that snow and ice dont build up on them. The tip of the cone is face up and has a hole in it where the HV wire comes in. That cone may make casting easier.
Edit
You can see one in photo 2 and photo 5 on the transformer just to the back left. That cone is too short for that insulator though, so it is most likely just placed there for now.