Silent tag is not working for some entities

List of all entities the silent tag is not working for:

Mobs

• Zombie Pigman: Transforming from a pig to a zombie pigman by a lightning bolt
• Ghast
• Creeper: See MC-63811
• Ender Dragon: On death
• Wither
• Guardian: At the end of shooting animation
• Elder Guardian At the animation with the mining fatigue effect
• Llama spitting: See MC-108089
• Witch: See MC-110352
• Phantom: flapping sound, see MC-133735
• Enderman: Teleportation sound created by EntityEnderman.teleportTo(double, double, double) at previous position

Falling Block

• Anvil
  • Landing: /summon falling_block ~ ~ ~ {Silent:1b,Block:"anvil",Time:2147483647}
  • Breaking: /summon falling_block ~ ~ ~ {Silent:1b,Block:"anvil",Time:2147483647,Data:11b}

Entities summoned by mobs

• Splash potions of Witches
• Wither Skull (from Wither)
• Ghast Fireball
• Blaze Fireball
• NOT Snowballs by Snowman

Other

• Minecart
• Potions /summon potion ~ ~ ~ {Silent:1b,Potion:{id:"splash_potion",Count:1b}}
• Experience orbs when getting collected by a player (maybe intended!?)
• Bottle o' Enchanting
• Wither Skull (summoned by player)
• Given splash potions (maybe intended!?)
• End Crystal
• Lightning Bolt
• Firework rocket explosion
• TNT (see MC-63811)