If a player is in the same team as a mob, and said team has "friendlyFire" set to "false", then normally it won't attack you. But Piglins, Hoglins, Piglin Brutes, and Zoglins (this one might be intended) completely ignore teams.

How to recreate:

• /team add test
• /team modify test friendlyFire false
• Spawn Piglin
• Spawn Zombie
• /team join test @e

The Zombie will act passive towards you, the Piglin will attack you.