Spooki's Unique Mobs - Quik's Take

Deadeye (Sniper Skeleton)

crackshot with a bow, hunting for bounties

Smolder (Ember Skeleton)

a primordial undead, neither piglin nor withered

Shelleton (Ender Skeleton)

parasitized by an undead shulker, gained its abilities

Myriad (Multishot Skeleton)

sensing a target through the blindfold

Gnarled (Poison Skeleton)

ancient, bearded druid of the wetlands

Tranquil (Blossom Skeleton)

still and serene until you came along

icon, with the deadeye and tranquil