Minecraft wiki entry for Pig_(disambiguation), associated text: Piglin, a neutral mob from the Nether.
Pigman, the mob concept which was eventually worked into the piglin.
Zombie Pigman, The name for zombified piglins before the Nether Update.
Piglin Brute, a complete-hostile version of the piglin that attacks the player on sight, found only in bastion remnants.
Hoglin, a warthog-like hostile mob from the crimson forest.
Zoglin, an undead/zombified variant of the hoglin, only spawns if a hoglin enters the overworld or the end for longer than 15 seconds.
Pigstep, a soundtrack by Lena Raine.