Besides The Russian Alternative, MOM Miniaturas'
Dark Dwarves, Mantic's
Abbysal Dwarves, Anvil Industry's
Fallen Dwarves, Scibor's
Moscals, Norba's
Chaos Dwarfs and Titan Forge's
Sons of Kashan Vra come to mind.
Having said that, if I were to start a Chaos Dwarf army nowadays, I would probably do the following:
1. Get
MOM's dark stunties for your core melee troops (20 models 20€
lol).
2. Get The Russian Alternative for most of the rest, their metal is great quality for the price, the resin is cheap but I don't have any resin models from them so cannot tell.
3. Get Mantic for specific things like Bull Centaurs (the models are a bit lacklustre but decent enough), perhaps the "decimators" if you want some blunderbusses (the russian's arquebusiers look a bit more like fire glaives), lesser golems if you want to represent K'daai, etc.
Norba has pretty good prices as well, although the models are a bit monopose-ish and the aesthetics are quite "mesopotamic", so to speak, so maybe not up to everyone's tastes.
Personally, I own some Chronopia metals that are wonderful towards representing Chaos Dwarves, but I'm afraid these must have been
oop for ages.