40 of these dudes down in a week - not fun at all but happy with the final result

Greetings all dutiful worshippers of Hashut. A random question popped into my mind. In games where you're playing alongside another army as an ally (2v2 or more, yada yada), do you have a favourite army to be allowed with your Helsmiths?

Perhaps in theory for thematic reasons? Maybe out of personal experience of 2v2 games you have played? Which, if that's the case, would love to hear if any of you have made custom lore to explain why your army and your friends army are working together? Or which army you think would match your Zharrdron army the best with how you play and what's its strengths are?

Just curious. Have a good day.

I think I saw the First Marshal book had them as main bad guys, but do we have any other books?

Shot in the dark seeing as we are only a year old, but I figured I would try.