>>96371211
There are three Durardin factions + one coming in the future.

The most generic ones are the Dispossessed. They're allied to the Citites of Sigmar and play like classical dwarves; advanced tech, tight formations, the works. There's not much.

The Fyreslayers are gold-obsessives who worship the god Grimnir, who's currently shattered and they're seeking to build him. They all look like slayers, which if often a mark against them, but if you like slayers they're basically an entire society of those + lava monsters.

The Kharadron Overlords are atheistic engineers who control transit networks and mercenary companies. The Mortal Realms are cosmically massive so their tech basically fuels the factions of Order.

The Helsmiths of Hashut (who might be Tzeentch in disguise, we don't know yet) are Chaos Duardin (most likely) who worship an evil god of industry and pollution. They're basically Captain Planet villains.

Gotrek is technically a Fyreslayer unit, but he can be used with any Order army and he's an entire story. The TL;DR is that he's a hero from Fantasy whose soul (aka marketability) was so great that it survived into AoS and he's famous for being a damn blender who can survive most charges.