The modders have created loads of new assets for Bannerlord, with detailed units like Cairn Wraiths and necromancers. The Old Realms mod team has thus far released an early beta of the mod, which is somewhat unstable but includes the Empire of Man and the Vampire Counts factions. The Old Realms is a total conversion mod for Bannerlord that adds completely new factions, art, weapons, rules, maps, and more to TaleWorlds’ medieval game.
There aren’t really any other games that evince the feeling of commanding a medieval army the way Mount & Blade II: Bannerlord does, and thanks to a team of dedicated modders, soon you’ll be able to try that out as a leader in Warhammer Fantasy’s Old World setting.