The two leveled lists T_Mw_Random_ArmorsPldrLImperial and T_Mw_Random_ArmorsPldrRImperial (used about 100 times each in Mainland, although 50 of those are just the same NPC) can pick from three different kinds of pauldron each (vanilla imperial steel and chain, as well as data studded leather). This creates wildly mismatched outfits that don't fit with what's supposed to be uniform looking generic NPCs. In the rare cases where this effect is intentional it should just be done manually.

I assume this was done by copying the vanilla pauldron leveled item, but that one actually spawns an imperial steel pauldron 100% of the time, meaning it will never produce variations like this.

The leveled list has some uses (like in containers), but in my opinion it should not be used for NPC equipment, and the instances where it's been used at the moment should just be changed to a fitting deterministic item (which in almost all cases will be the vanilla Imperial Steel Left/Right Pauldron)