I'm referring to the R3 mechanic when a monster is stunned. Each monster has only one execution animation. I played the game so long so I probably crushed a draugr's head a thousand times with my boot. Would it have killed the dev to add another animation per monster? It's not a lot.
Pressing R3 generally has two execution animations for draugrs, the head stomp and ripping them in half with your hands... although "Cleave" (Hold R2) is also an execution but it doesn't require the enemy to be stunned beforehand. Look up some execution videos on YouTube and you'll see there's multiple per enemy, lol.