This Includes The Variant 0, 1, And 2 Design Of The Zombified Piglin Hunter. You think that "The armored variants should be separate." If you play Minecraft Dungeons, you know that the armored mobs don't exist. it's just a variant of the base mob.

https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Zombified_Piglin_Hunter

Zombified piglin hunters in Minecraft Dungeons are similar in appearance to their default counterparts in the base game with the slight exception that they have the ability to use crossbows. Zombified piglin hunters have variants. The first variant is seen wearing a black armor set and has one gold guard on its left arm, and wearing a cracked netherite helmet and leather belt with gold accents, while the second variant is seen wearing a black-blue armor set and has two gold guards on its arms, and wearing a cracked Gold helmet. They both are equipped with a crossbow.