Sell me on GNB or WAR - class fantasy

[NegativeS]

If you're looking for Battlemaster or WoW Warrior, stay away from GNB.

People liken it to '3 DPS in a trenchcoat' because it plays the most like a DPS, with a much faster rotation than the other tanks and more emphasis on parries than blocking or armor.
Aesthetically, GNB's weapons are much smaller than you might want (you're basically smacking people with a shotgun) and its artifact armors, animations, etc. lean more into 'mercenary' than strictly 'protector'. Just look at Thancred post-Stormblood.

Honestly, PLD might be closer a Battlemaster than any other tank in terms of abilities and aesthetics, but you said minimal magic, so...

Personally, I love GNB, but for you, maybe try WAR.