I bet their is no new update name, These mobs sure are getting less advance and when their was advanced ones people still vote for mobs that doesn't add a new mechanic. They are just adding random stuff at this point. From what I can tell the only new mechanic ones we got that are unique are(Phantom spawns after several days of staying up, Sniffer sniff up hidden items) Allays just pick stuff up like ,Golems:Roses, Enderman:Blocks, Zombies and Skeletons:Weapons, Zombie Piglin:Gold Swords, Piglins:Crossbows, Witchs:Potions, Tuff Golem:Any Item, Vindicators:Axes, Pillagers:Crossbows, Wandering Villager:Invisability Potion, Drowns:Tridents) A whole lot of pickers, so what made allay unique? More unique than every other mob that can pick stuff up?
Ultimate Unique mobs are
That underwater longtung thing(forgot name)- Pulls you closer in like mortal combat "Get over here!"