Here is a list of all of the sound files that do not have a Subtitle, misspelled subtitles, etc.

No Subtitles:
minecraft:entity.bat.takeoff
minecraft:entity.blaze.burn
minecraft:entity.bobber.throw
minecraft:entity.chicken.step
minecraft:entity.cow.milk
minecraft:entity.donkey.chest
minecraft:entity.donkey.angry
minecraft:entity.endereye.launch
**minecraft:entity.endermen.ambient (Subtitle: vwoops)
**minecraft.entity.endermen.scream (Subtitle: vwoops)
minecraft:entity.horse.land
minecraft:entity.horse.breathe
minecraft:entity.horse.eat
minecraft:entity.horse.angry
minecraft:entity.horse.armor
minecraft:entity.irongolem.step
minecraft:entity.magmacube.squish
minecraft:entity.minecart.inside
minecraft:entity.pig.saddle
minecraft:entity.expirence_bottle.throw
minecraft:entity.expirence_orb.touch
minecraft:entity.generic.extinguish_fire
minecraft:entity.horse.saddle
minecraft:entity.player.levelup
minecraft:entity.player.attack
minecraft:entity.player.weak
minecraft:entity.player.strong
minecraft:entity.player.sweep
minecraft:entity.player.knockback
minecraft:entity.player.nodamage
minecraft:entity.player.crit
minecraft:entity.rabbit.attack
minecraft:entity.shield.block
minecraft:entity.shulker.ambient
minecraft.entity.shulker.open
minecraft:entity.shulker.close
minecraft:entity.shulker.death
minecraft:entity.shulker_bullet.hit
minecraft:entity.shulker_bullet.hurt
minecraft.entity.slime.squish
minecraft:entity.small_magmacube.squish
*minecraft:entity.snowman.ambient (No sound..)
minecraft.entity.snowman.death
minecraft.entity.snowman.hurt
minecraft.entity.villager.trading
minecraft:entity.villager.no
minecraft:entity.villager.yes
minecraft:entity.witch.drink
minecraft:entity.witch.death
minecraft:entity.witch.throw
minecraft:entity.witch.ambient
minecraft:entity.wolf.shake
**minecraft:entity.zombie.attack_iron_door (No subtitle, and not used in-game normally)
**minecraft:entity.zombie.attack_door_wood (Subtitle: 'Block Broken', but its not being broken, just being destroyed)
minecraft.enchant.thorns.hit
minecraft.music.creative
minecraft.music.credits
minecraft.music.dragon
minecraft.music.end
minecraft.music.game
minecraft.music.menu
minecraft.music.nether
minecraft.record.11
minecraft.record.13
minecraft.record.blocks
minecraft.record.cat
minecraft.record.chirp
minecraft.record.far
minecraft.record.mall
minecraft.record.mellohi
minecraft.record.stall
minecraft.record.strad
minecraft.record.wait
minecraft.record.ward
minecraft:ui.button.click
minecraft.ambient.cave
minecraft:block.tripwire.detach
minecraft:block.cloth.place
minecraft:block.glass.fall
*minecraft:block.furnace.fire_crackles (Sound is normally very low in sound)
minecraft:block.stone_pressureplate.click_off
minecraft:block.portal.travel (Not a obtainable sound normally in-game)
minecraft:block.brewing_stand.brew
minecraft:entity.leashknot.place
minecraft:entity.leashknot.break
minecraft.item.shovel.flatten
minecraft:item.bucket.fill_lava
minecraft:item.bucket.empty
minecraft:item.bucket.empty.lava
minecraft:item.bucket.fill
minecraft:item.armor.equip_leather
minecraft:item.armor.equip_iron
minecraft:item.armor.equip_chain
minecraft:item.armor.equip_gold
minecraft:item.armor.equip_generic
minecraft:item.armor.equip_diamond
minecraft:item.firecharge.use
minecraft:item.bottle.fill
*minecraft:item.bottle.fill_dragonbreathe (No sounds)
minecraft:item.hoe.till
minecraft.entity.itemframe.remove_item
minecraft.entity.itemframe.add_item
minecraft.entity.itemframe.place
minecraft.entity.itemframe.rotate_item
minecraft.entity.itemframe.break
minecraft.entity.painting.place
minecraft.entity.painting.break
minecraft.block.chorus_flower.grow
minecraft.block.chorus_flower.death

Thanks if you read this or fixed it. This took me approximately 7 hours to find all of them and i'm sure I missed a few but they might have been fixed or reported by someone else