This is my first proper contribution to MMowned so go easy on me. This is a list of ItemID's for every Tier(PVE wise) sorted by Class, so to find them press CTRL+F and type in Tier <number> <class>. Later on I will make a version of this but PVP style Just so you know I may need to reserve some posts after this. Also, later on I am going to add WoWHead links to every item here so keep watching this thread!
Tier 0 Druid
Wildheart Belt - 16716
Wildheart Boots - 16715
Wildheart Bracers - 16714
Wildheart Cowl - 16720
Wildheart Vest - 16706
Wildheart Spaulders - 16718
Wildheart Kilt - 16719
Wildheart Gloves - 16717
Tier 0.5 Druid
Feralheart Belt - 22106
Feralheart Boots - 22107
Feralheart Bracers - 22108
Feralheart Cowl - 22109
Feralheart Gloves - 22110
Feralheart Kilt - 22111
Feralheart Spaulders - 22112
Feralheart Vest - 22113
Zul'Gurub Druid
Pristine Enchanted South Seas Kelp - 19613
Wusholaay's Charm of Nature - 19955
Zandalar Haruspex's Bracers - 19840
Zandalar Haruspex's Belt - 19839
Zandalar Haruspex's Tunic - 19838
Tier 1 Druid
Cenarion Belt - 16828
Cenarion Boots - 16829
Cenarion Bracers - 16830
Cenarion Vestments - 16833
Cenarion Gloves - 16831
Cenarion Helm - 16834
Cenarion Leggings - 16835
Cenarion Spaulders - 16836
Tier 2 Druid
Stormrage Belt - 16930
Stormrage Boots - 16898
Stormrage Bracers - 16904
Stormrage Chestguard - 16897
Stormrage Cover - 16900
Stormrage Handguards - 16899
Stormrage Legguards - 16901
Stormrage Pauldrons - 16902
Tier 2.5 Druid
Genesis Boots - 21355
Genesis Helm - 21353
Genesis Shoulderpads - 21354
Genesis Trousers - 21356
Genesis Vest - 21357
Tier 3 Druid
Dreamwalker Boots - 22492
Dreamwalker Girdle - 22494
Dreamwalker Handguards - 22493
Dreamwalker Headpiece - 22490
Dreamwalker Legguards - 22489
Dreamwalker Spaulders - 22491
Dreamwalker Tunic - 22488
Dreamwalker Wristguards - 22495
Ring of the Dreamwalker - 23064
Tier 3.5 Druid Feral
Wastewalker Tunic - 28264
Wastewalker Gloves - 27531
Wastewalker Helm - 28224
Wastewalker Leggings - 27837
Wastewalker Shoulderpads - 27797
Tier 3.5 Druid Resto/Balance
Moonglade Cowl - 28348
Moonglade Handwraps - 27468
Moonglade Pants - 27873
Moonglade Robe - 28202
Moonglade Shoulders - 27737
Tier 4 Druid Feral
Breastplate of Malorne - 29096
Gauntlets of Malorne - 29097
Greaves of Malorne - 29099
Mantle of Malorne - 29100
Stag-Helm of Malorne - 29098
Tier 4 Druid Resto
Chestguard of Malorne - 29087
Crown of Malorne - 29086
Handguards of Malorne - 29090
Legguards of Malorne - 29088
Shoulderguards of Malorne - 29089
Tier 4 Druid Balance
Antlers of Malorne - 29093
Britches of Malorne - 29094
Chestpiece of Malorne - 29091
Gloves of Malorne - 29092
Pauldrons of Malorne - 29095
Tier 5 Druid Feral
Nordrassil Chestplate - 30222
Nordrassil Handgrips - 30223
Nordrassil Headdress - 30228
Nordrassil Feral-Kilt - 30229
Nordrassil Feral-Mantle - 30230
Tier 5 Druid Resto
Nordrassil Chestguard - 30216
Nordrassil Gloves - 30217
Nordrassil Headguard - 30219
Nordrassil Life-Kilt - 30220
Nordrassil Life-Mantle - 30221
Tier 5 Druid Balance
Nordrassil Chestpiece - 30231
Nordrassil Gauntlets - 30232
Nordrassil Headpiece - 30233
Nordrassil Wrath-Kilt - 30234
Nordrassil Wrath-Mantle - 30235
Tier 6 Druid Feral
Thunderheart Chestguard - 31042
Thunderheart Gauntlets - 31034
Thunderheart Cover - 31039
Thunderheart Leggings - 31044
Thunderheart Pauldrons - 31048
Tier 6 Druid Resto
Thunderheart Tunic - 31041
Thunderheart Gloves - 31032
Thunderheart Helmet - 31037
Thunderheart Leggings - 31045
Thunderheart Spaulders - 31047
Tier 6 Druid Balance
Thunderheart Vest - 31043
Thunderheart Handguards - 31035
Thunderheart Headguard - 31040
Thunderheart Pants - 31046
Thunderheart Shoulderpads - 31049
Tier 0 Hunter
Beaststalker's Belt - 16680
Beaststalker's Boots - 16675
Beaststalker's Bindings - 16681
Beaststalker's Cap - 16677
Beaststalker's Tunic - 16674
Beaststalker's Pants - 16678
Beaststalker's Mantle - 16679
Beaststalker's Gloves - 16676
Tier 0.5 Hunter
Beastmaster's Belt - 22010
Beastmaster's Bindings - 22011
Beastmaster's Boots - 22061
Beastmaster's Cap - 22013
Beastmaster's Gloves - 22015
Beastmaster's Mantle - 22016
Beastmaster's Pants - 22017
Beastmaster's Tunic - 22060
Zul'Gurub Hunter
Maelstrom's Wrath - 19621
Renataki's Charm of Beasts - 19953
Zandalar Predator's Bracers - 19833
Zandalar Predator's Belt - 19832
Zandalar Predator's Mantle - 19831
Tier 1 Hunter
Giantstalker's Belt - 16851
Giantstalker's Boots - 16849
Giantstalker's Bracers - 16850
Giantstalker's Breastplate - 16845
Giantstalker's Epaulets - 16848
Giantstalker's Gloves - 16852
Giantstalker's Helmet - 16846
Giantstalker's Leggings - 16847
Tier 2 Hunter
Dragonstalker's Belt - 16936
Dragonstalker's Bracers - 16935
Dragonstalker's Breastplate - 16942
Dragonstalker's Gauntlets - 16940
Dragonstalker's Greaves - 16941
Dragonstalker's Helm - 16939
Dragonstalker's Legguards - 16938
Dragonstalker's Spaulders - 16937
Tier 2.5 Hunter
Striker's Diadem - 21366
Striker's Footguards - 21365
Striker's Hauberk - 21370
Striker's Leggings - 21268
Striker's Pauldrons - 21267
Tier 3 Hunter
Cryptstalker Boots - 22440
Cryptstalker Girdle - 22442
Cryptstalker Handguards - 22441
Cryptstalker Headpiece - 22438
Cryptstalker Legguards - 22437
Cryptstalker Spaulders - 22439
Cryptstalker Tunic - 22436
Cryptstalker Wristguards - 22443
Ring of the Cryptstalker - 23067
Tier 3.5 Hunter
Beastlord Cuirass - 28228
Beastlord Handguards - 27474
Beastlord Helm - 28275
Beastlord Leggings - 27874
Beastlord Mantle - 27801
Tier 4 Hunter
Demonstalker Gauntlets - 29085
Demonstalker Greathelm - 29081
Demonstalker Greaves - 29083
Demonstalker Harness - 29082
Demonstalker Shoulderguards - 29084
Tier 5 Hunter
Rift Stalker Hauberk - 30139
Rift Stalker Gauntlets - 30140
Rift Stalker Helm - 30141
Rift Stalker Leggings - 30142
Rift Stalker Mantle - 30143
Tier 6 Hunter
Gronnstalker's Chestguard - 31004
Gronnstalker's Gloves - 31001
Gronnstalker's Helmet - 31003
Gronnstalker's Leggings - 31005
Gronnstalker's Spaulders - 31006
Tier 0 Mage
Magister's Belt - 16685
Magister's Bindings - 16683
Magister's Crown - 16686
Magister's Gloves - 16684
Magister's Leggings - 16687
Magister's Mantle - 16689
Magister's Robes - 16688
Magister's Boots - 16682
Tier 0.5 Mage
Sorcerer's Belt - 22062
Sorcerer's Bindings - 22063
Sorcerer's Boots - 22064
Sorcerer's Crown - 22065
Sorcerer's Gloves - 22066
Sorcerer's Leggings - 22067
Sorcerer's Mantle - 22068
Sorcerer's Robes - 22069
Zul'Gurub Mage
Jewel of Kajaro - 19601
Hazza'rah's Charm of Magic - 19959
Zandalar Illusionist's Wraps - 19846
Zandalar Illusionist's Mantle - 19845
Zandalar Illusionist's Robe - 20034
Tier 1 Mage
Arcanist Belt - 16802
Arcanist Bindings - 16799
Arcanist Crown - 16795
Arcanist Boots - 16800
Arcanist Gloves - 16801
Arcanist Leggings - 16796
Arcanist Mantle - 16797
Arcanist Robes - 16798
Tier 2 Mage
Netherwind Belt - 16818
Netherwind Bindings - 16918
Netherwind Boots - 16912
Netherwind Crown - 16914
Netherwind Mantle - 16917
Netherwind Gloves - 16913
Netherwind Pants - 16915
Netherwind Robes - 16916
Tier 2.5 Mage
Enigma Boots - 21344
Enigma Circlet - 21347
Enigma Leggings - 21346
Enigma Robes - 21343
Enigma Shoulderpads - 21345
Tier 3 Mage
Frostfire Belt - 22502
Frostfire Bindings - 22503
Frostfire Circlet - 22498
Frostfire Gloves - 22501
Frostfire Leggings - 22497
Frostfire Robes - 22496
Frostfire Sandals - 22500
Frostfire Shoulderpads - 22499
Frostfire Ring - 23062
Tier 3.5 Mage
Incanter's Cowl - 28278
Incanter's Gloves - 27508
Incanter's Pauldrons - 27738
Incanter's Robe - 28229
Incanter's Trousers - 27838
Tier 4 Mage
Collar of the Aldor - 29076
Gloves of the Aldor - 29080
Legwraps of the Aldor - 29078
Pauldrons of the Aldor - 29079
Vestments of the Aldor - 29077
Tier 5 Mage
Cowl of Tirisfal - 30206
Gloves of Tirisfal - 30205
Leggings of Tirisfal - 30207
Mantle of Tirisfal - 30210
Robes of Tirisfal - 30196
Tier 6 Mage
Cowl of the Tempest - 31056
Gloves of the Tempest - 31055
Leggings of the Tempest - 31058
Mantle of the Tempest - 31059
Robes of the Tempest - 31057