Maybe someone can port Dread Necromancer from 3.5e to 5e (
https://www.dndtools.net/classes/dread-necromancer/ )
NWN2 had a mod who adds this class
https://neverwintervault.org/project/nwn2/hakpak/original-hakpak/dread-necromancer-class and adds some spells "- Plague of Undead (Level 9): Plague of undead creates 2 skeleton archers and 2 zombie guardians with maximum hit points for their Hit Dice. The undead remain animated until destroyed."
![[Linked Image]](https://neverwintervault.org/sites/neverwintervault.org/files/project/6516/images/1233164861fullres.jpg)
But 5e isn't exactly the best edition to be a necromancer. There are some good homebrew stuff (eg
https://www.dndbeyond.com/subclasses/249855-dread-necromancer )