Noisy rocker arm?

Took the valve cover off again and started it up. Pushed down hard on each rocker arm on the pushrod side and they all felt the same, the noise never changed. I know the oil pressure is good, because it was spraying the hood!
The lifters don’t have any “squish” to them after running.
Craig, do you have access to a mechanic's stethoscope? You could pick up on an exhaust leak really quick with that and isolate it.