What ARE all of NAG's masks?

PS78, Castle 75k, Kirk Stretch, the 2K, HK78, 98 Proto… How many masks does he have, and what exactly are the differences? The only notable ones are the HK78 and the Kirk Stretch to me, but after that, I truly don’t know which is which-

From memory:

H78 (OG H1 mask)
H88 (H4 mask)
2K (limited edition H1 mask)
75K old mold (Kirk pressed mask)
75K New Mold (retool of the old mold with sharper definition)
75K Castle (retool of the old mold with more Castle stretch)
Castle mask (a Castle stretch mask different from the 75K Castle)
98 proto (made from retooling DP’s initial 1998 mask sculpt)
PS78 (another Castle stretch mask)
Scarred (an RZH1 mask)
Screenused (an RZ line mask, not sure the origin)
JA75 (Kirk mask made from Jay Allen’s Kirk)
HD Kirk (not sure the origin)
MMK (Kirk mask sculpted to specifically look like the Hero mask before conversion)
Cover (based on the look of the H4 poster mask)
Madman 78
Nightmare
Mint 75
RareR
Shape 78
UL 75

Not sure if I got them all, and most of these you don’t get to see posted around here much anymore. Some of the ones I didn’t give extra info on I haven’t seen on a whole or know what makes them different from Nik’s other masks.

ill add a couple more ive owned: 2k retool, Kirk stretch, hk78 flashback, prime 75, and shape 81.

He has a Halloween 6 mask he’s been working on for quite a minute but not yet available

Jesus Christ, that’s like a whole dictionary of NAG masks-

his Facebook is a great resource of past masks