The Command Undead feature says
As an action, you can choose one undead that you can see within 60 feet of you.
Unlike the spell Animate Dead it does not specify that it has to be a small/medium humanoid. So am I able to attempt to Command powerful undead such as liches, drago-liches, death tyrants, death knights, etc.? I know that they would be hard to keep under control because of the saving throws and their intelligence, but can I try, or does Command Undead not work on them at all?