1. Dragonite (You just get absolutely rekt by Fly Z, you can't hit hard enough.)
2. Magearna (This thing CMs once and reks you)
3. Tapu Lele (Fast Bulky outspeeds and nukes every PZ)
4. Meloetta (Tanks Scarf and Custap, CMs up against Conversion and destroys it with Psyshock)
5. Mawile-Mega (Spdef is a clean W across the board)
6. Tyranitar-Mega (Just cronches a clean W across the board)
7. Aggron (Clean Ws, Metal Burst + Heavy Slam does work)
8. Registeel (Clean Ws across the board)
9. Sawk (Scarf Sawk is a W)
10. Latias (Bulky Specs wins)
11. Latios (ditto)
12. Audino-Mega (Bulks everything)
13. Avalugg (Clean Ws across the board - Mirror Coat)
14. Blacephalon (Needs Overheat for consistent Custap MU but otherwise clean W)
15. Nihilego (Bulks and wins)
16. Terrakion (Bulks Hyper, bops everything)
1. It's not like you're necessarily limited to just Ghost Conversion- Z-Conversion into Ice is a major bop.
2. Sub + Recover wins iinm, but then you're either dropping Hyper Beam or your Conversion move, so fair enough.
3. Uh, Scarf? You ain't bulking Hyper Beam, and if you are, you ain't outspeeding Normalium.
4. Z-Conversion into Dark wins.
5. Fair
6. Fair
7. You can dance around Aggron with Recover, but I'll give this one to you out of charity.
8. Fair
9. Fair
10. I actually crafted a neat bulky set that eats specs ninja/hb garde/fb zardx/etc quite nicely, this would fall under the same branch.
11. ditto
12. This dies to both Uproar (blocking Rest) and Nasty Plot, no?
13. Z-Conversion into Dark wins. (immunity to Mirror Coat) Surely you could just pp stall Mirror Coat though, no?
14. This one even kos my spdef set, so I'll give it to you.
15. Fair
16. Fair
1. Gardevoir (Speedy Bulky 50/50s Custap)
2. Zeraora (Fast Electrium just bops everything but 50/50 with Custap)
3. Aegislash (Flash Cannon is a big 50/50 with Z Conversion beat beats all the other guys)
4. Landorus-Therian (Scarf wins, 50/50 with Custap)
5/5.5. Magnezone/ton (50/50 vs HPFire Scarf, otherwise Metal Sound wins)
6. Sableye-Mega (Nasty Plot conversion can be unreliable with CM)
7. Togekiss (Electrium wins 9 times out of 10)
8. Victini (Fast Band is a 50/50 with Custap)
9. Ferrothorn (Surprised about this myself but Grassium Ferro beats all sets except for a 50/50 on Conversion)
10. Pheromosa (50/50 w/ Custap)
11. Carracosta (50/50 Scarf vs Conversion)
12. Diancie-Mega (50/50s Custap)
1. See 10 of above
2. Um, Scarf (wow timid exists!!!). You can also just put some more bulk on it to live Fake Out + Z-fists
3. See 4 of above (you can beat basic sets with Steelium and Sneak, at least)
4. Same as Zeraora in just bulking a bit more. You barely even ko anti zardx pz without risking death by Timid Scarf.
5. Fair in that it's a 50/50, but that makes it more of a check, no?
6. Fair
7.
Till you get hit with Z-Conversion into Electric Fair
8. Fast Band gets shredded by Scarf and can be bulked for like Zeraora
9.
More like Specs HP Fire Fair, though you need SD for Z-Conversion
10. Timid Scarf gang
11. I'd actually label this a counter, since it wins, provided knowing the set.
12. Fair
1. Kommo-o (252/252 Z Conversion wins, otherwise it's a roll)
2. Clefable (252/252 Z Conversion wins)
3. Heatran (Recover Z Conversion is a 50/50)
4. Blaziken-Mega (50/50s for days)
5. Jirachi (lol)
6. Necrozma (Loses to Nasty Plot Z Move)
7. Chansey (Loses to NP Z Move)
8. Blissey (Loses to NP Z Move)
1. Fair (though that is the most used spread, so -1)
2. Ghost Conversion can actually just fish for spd drops and nuke
3. Metal Sound would actually win here if it weren't for the fact that offensive Normalium can actually just 2HKO with Z-hb into hb, but also just some hp lets you bulk Flash Cannon into Overheat after Z-Conversion and let you safely 2HKO without needing to worry about getting Taunted or something.
4. Fair
5. Fair
6. Not really much of a check if there are situations where it can easily just outright lose-
7. ditto
8. ditto-o
TL;DR
Counters: 16-8+1 = 9
Almost-Counters: 12-8 = 4
Checks: 8-5+1 = 4
Total: 36 - 8 + 1 - 8 - 5 + 1 = 17
I know it's a bit of a hot take to suggest non-ghost conversion pz with how used to it everyone is by now, but with Sawk being overwhelmingly scarfed nowadays, basically the one reason to convert into Ghost is gone, as well as running near max speed in order to outpace Sawk. Most importantly, Porygon-Z isn't experiencing anywhere near the same amount of opportunity cost in running alternative sets as Dragonite would be in running, say, Groundium, Firium, or even Choice Scarf, so while these sets that I bring up aren't necessarily mainstream, they certainly aren't just gimmicky bait sets, either.