The mage guide is absolutely not updated for P4, a lot of good items from ZG are still not in there: Touch of Chaos, Band of Servitude, Zandalarian Hero Charm, Will of Arlokk (for evocation)... Pretty simple: use your brain, don't just follow the guide blindly.
The priest list is an absolute joke, so many items you shouldn't ever take over any caster. Please remove this list and put something at least somewhat accurate, this is completely misleading !
The warrior BiS guide also has some problems and lacking good items:1.) Head: Crown of Destruction and Foror's Eyepatch is not listed at all, while it's good (optional) for those who have enough hit, or don't have the time / money to get Lionheart Helm or do PVP.2.) Shoulders: Drake Talon Pauldrons is put as just "Optional" while it's clearly better than Champion's Plate Shoulders (+3 strength; 20 agility = 1% crit, not counting Spirit of Zandalar)3.) Back: Puissant Cape is obviously the best, but (not listed) Cloak of Draconic Might is a close second (becomes best when the warrior has enough hit). Cloak of Firemaw should be listed as optional (with the caveat: rogue prio). (Not listed) Zulian Tigerhide Cloak is also optional when the warrior needs hit.4.) Chest: (not listed) Runed Bloodstained Hauberk is on par with Legionnaire's Plate Hauberk (optional).5.) Wrist: Zandalar Vindicator's Armguards should be listed as optional.6.) Hands: (not listed) Sacrificial Gauntlets is BiS for those in need of hit / not horde / don't have the time or money to do PVP. (Not listed) Edgemaster's Handguards should be optional for those not orc/human.7.) Waist: if Onslaught Girdle won't drop and the warrior doesn't need hit, (not listed) Zandalar Vindicator's Belt or Therazane's Link becomes a good choice (optional). (Not listed) Belt of Preserved Heads is also better than Brigam Girdle (optional).8.) Legs: Outrider's Plate Legguards is added in content phase 6, so shouldn't be listed. Dark Heart Pants (BiS) is not listed, while clearly better than Legionnaire's Plate Leggings (1 strength = 2 attack power). Legguards of the Fallen Crusader should be listed as optional for those who don't have the time / money to do PVP / fight for world bosses (or not using the Devilsaur set).9.) Feet: alternative BiS Boots of the Shadow Flame should be listed (caveat: rogue prio) - because Chromatic Boots should be first given to (fury-)protection warriors. Bloodmail Boots is listed as optional, so (not listed) Windreaver Greaves should be there too.10.) Ring: (not listed) Band of Accuria should be optional (caveat: protection warrior and rogue prio), while it doesn't have str/AP and only 0,8% crit, the 2% hit is huge.If the guide's original author doesn't have time or the enthusiasm to update the warrior BiS list, I would be happy to do it and help the community.