Survivor:

Killer Blind (flashlight/flash bang/firecracker/blast mine)
Killer Stun (pallet stun)
Safe Unhook
Protection hits
Enduring status effects
Change from any status

These are already events the game itself tracks so you would need the hook for them, but at least that part of the work is done

Killer:

Generator Grabs
Changing the status of a survivor

Mori death events

nurse: blinks to hit event
hag: teleport to hit event
clown: bottle hits
spirit: phase walk to hit events
legion: feral frenzy stabs
demogorgon: lunges
Full Stalk on Ghostface and Myers
Huntress: hatchet hits
Deathslinger: redeemer spear hits
Oni: demon dash and demon strike downs
Pyramidhead: punishment of the damn and cage of atonement
Hillbilly: chainsaw rush
Cannibal: chainsaw sweep
Plague: fountain drink and red puke
blight: lethal rush slams and hits
Twins: Victor pounces
Trickster: showstopper blade throws and main event
Nemesis: Tentical strikes and zombie hits
Pinhead: summons of pain possessed chains, lament configuration solving and teleport
Artist: birds of torment
Onryo: manifestation and demanifestation, and projection
Dredge: Gloaming activation and locker teleports

These are the things that show actual skill in the game that would be the things that show gamer skill as well as events that would end up in clips