The first thing to spring to mind is Evokers "wolololololo" priest chant from Age of Empires II changing sheep colours between red and blue. It always makes me want to play AoE2 again (and is why the remastered one never gets uninstalled).
The second, i think is just speculation. Since the Nether Update and the introduction of warped wood. When an enderman makes their non-agro noises it now sounds like "warped wood" not "whoop whoop" or whatever sound they're supposed to make 🤣