This Includes The Variant 0, 1, And 2 Design Of The Zombified Piglin. 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

Zombified Piglins in Minecraft Dungeons is similar in appearance to their counterpart within the original game with the slight exception that they are hostile. They are also in a hunched position, unlike the original game. Zombified piglins, like their regular counterparts, have variants. The first variant wears a black armor set and has one gold arm guard on its left arm, while the second variant wears a reddish armor set, has two gold guards on its arms, and has a cracked Gold helmet. the first variant wields a gold axe while the second variant wields the Firebrand.