Changes as of 1.21.9 Pre-Release 1

-Decoys no longer use a text display entity to hide the "NPC" text while showing a username. This was a workaround since no other solution was offered.

-Decoys now mirror the player's rotation. This includes head and body rotation

-Decoys can now mimic the poses of the player; the specifications of how that works will be as follows:   When using a Decoy Egg while crouching, the decoy will be crouching when summoned.   When using a Decoy Egg while in water, the decoy will have a swimming pose when summoned.   If a decoy is summoned while crouching, the nametag of the decoy will NOT be visible. This is intentional

-Removed an entity tag that was misplaced in the pack. O_o -Reduced the particles when summoning a decoy -Reduced the volume of the sound that's played when summoning a decoy