Here’s another variation. Either use the spark plug holes or tap the passenger side stud holes to hold a size larger stud than the cylinder head studs that are removed. Put a hefty piece of wood several feet long stud with enough length to rest against the drivers side edge, A hole passing through the stud on the passenger side and most if the length hanging out on the passenger side. Probably one of these at the front and one at the rear stud locations to nimimize bending or twisting the head. This will give more leverage to peel. Assuming it doesn’t come up on its own, keep the load on it while you hammer in wedges between block and gasket. It seems like something that once a little bit of progress is made it will come up quickly. If the head ends up ruined hopefully someone has another somewhere?