>>720622795
You don't get much undeath in 40k because the setting runs mostly on shity psionics instead of normal magic, making necromancy not realy a thing.
You'd need to go to other GW IPs for unded, but then the question is how much you care about zombies specifically, because they're far from the most supported type of corpse (unleas you count canibal hillbillies as basiclly zombies)