I want to talk about luck. In the late game, taking this skill is really useless, since luck can be increased with artifacts and buildings on the map. But on small maps, where all of this is scarce, it is worth taking luck. Soldier's luck is quite suitable for skeletons. Regarding wizardry. You can take it against magical races to counter, for example, Armageddon, or because of the undead's protection against chaos. But in general, taking wizardry for Necromancers is superfluous.
But leadership is a separate topic. If there is a large map with many neutrals, and especially if the game is played with the condition that we develop for some time and then attack, it is a MUST-USE, as they say. At the same time, if you have the Diplomacy skill, you have the opportunity to recruit up to 30% of the neutrals on the map, and with the Leadership Crown artifact - up to 40%. This can be a very large number of units, literally hundreds. In addition, leadership is useful to take if there is a computer on the map, and there is a skill for abandoned mines. Then any computer can be defeated with just ghosts (for some reasons).

Added 2 minutes ago

1. Vampire lords. With soldier's luck, the chance of putting the enemy to sleep during an attack increases.

I don't quite agree. With vampire lords, the influence of soldier's luck has not been confirmed yet, and it is unknown whether it affects the percentage of putting to sleep or not. The only parameter that definitely affects it is the number of vampires in the stack.