Zingel
Auto-translated
A basic test showed that when all of your hero's stacks are full, and among the units there are only upgraded versions of the ones we are considering (Skeleton Warrior, Zombie, Wraith, Mighty Lich), then the number of units raised with the Cloak of the Undead King will be one third less, i.e., 2/3 of the calculated amount.
Moreover, this factor does not depend on any other circumstances.
And without the Cloak of the Undead King?
I assume the result will be the same, i.e., the Cloak of the Undead King has nothing to do with it, and this is a property of necromancy.
Герои - это клёво.