I love Necropolis and Dungeon, but on maps with a lot of combat, the Succubus, and the Dungeon commander, and the Astral Spirit are the best. I remember I had 3 main heroes: one would steal legions of soldiers from the enemy and add them to his own army, another would get a lot of money after a battle to buy an army, and the third would go with a weaker army because his commander would temporarily take a significant number of soldiers from the enemy during the battle. As for the Necropolis commander, he's not very good because you have to level him up a lot for him to resurrect soldiers properly. The Cleric is good, mana never hurts anyone, the Shaman gives a powerful boost, and the Rampart commander provides strong defense. And in general, all commanders are good in their own way; they have a great balance, which is why I respect and appreciate the developers of Heroes of Might and Magic.

Added 3 minutes later
And don't think that the "***" hides a swear word; I just couldn't remember the commander's name.