Currently available Age of Sigmar equivalent models (ONCE HELSMITHS OF HASHUT ARE RELEASED), with some TOW models where they might be a better fit. Some models are only available from Games Workshop online.
Characters
• Sorcerer-Prophet, Daemonsmith Sorcerers - Daemonsmiths/Ashen Elder, Urak Tarr if riding a Taurus, no clear alternative for Lammasu
• Bull Centaur Taur’ruk - Bull Centaurs/Anointed Sentinels
• Infernal Castellan, Infernal Seneschals - War Despot
• Hobgoblin Khans - Hobgrot Slittaboss
• Black Orc Boss - Ardboy Big Boss
Core
• Infernal Guard - with Blunderbusses/Fireglaives use Infernal Razers, with hand weapons use Infernal Cohorts with Hashutite blades, with great weapons or halberds convert the Infernal Cohorts spears with axeheads
• Hobgoblin Cutthroats - Hobgrot Vandalz
• Black Orc Mob - TOW Black Orc Mob, Ardboyz
Special
• Infernal Ironsworn (see Infernal Guard)
• Sneaky Gits - Hobgrot Slittaz
• K’daai Fireborn - Flamers of Tzeentch/Magmic Invocations
• Bull Centaur Renders - Bull Centaurs/Anointed Sentinels
• Iron Daemon - Dominator Engine: may be a big bull robot instead of a train, but like the Iron Daemon it comes with a choice of either two cannons or bludgeoning weapons. 40k Khorne Blood Slaughterer
• Deathshrieker Rocket Launcher - Deathshrieker Rocket Battery
• Magma Cannon - Bloab Rotspawned for Hellbound, possibly convert Tormentor Bombard otherwise
• Hobgoblin Bolt Throwers - Beast-skewer Killbow
Rare
• Hobgoblin Wolf Riders - TOW Goblin Wolf Rider Mob, Snarlpack Cavalry
• Dreadquake Mortar - Tormentor Bombard
• Hellcannon - Hellcannon
Example army: