Allay - Amethyst, rarely music discs not found in trail ruins.
Armadillo - Armadillo scutes.
Camel - Leather.
Creaking - Sticks LOL
Frog - Frog spawn/slimballs.
Goat - Mutton, wool, leather, and rarely goat horns.
Happy Ghast - Rarely ghast tear. Also when killed with fire aspect or while on fire will drop a dried ghast.
Llama - Wool.
Pillager - Emeralds during raids.
Shulker - Two shulker shells instead of one.
Vex - Echo shards, rarely music discs 11, 13 or a disc 5 fragment.
Villager - Emeralds and farmed foods.
Vindicator - Increased emerald rates.
Zoglin - Leather.