I'm working on some design stuff and I'm trying to think of various types of leaders that have been in wargames over time. I'm thinking in generalities here, so differentiating between the various level of "Space Marine captain" isn't really needed.

This also refers more to a model/unit that affects or is the center of an entire army (a warcaster, or a
40K IC), rather than a unit upgrade (like an Exarch or Unit Attachment).
The ones that I'm experienced with are pretty much these general categories; I'd love to hear from people that have played other games with what those games included.
-The warrior: basically, just the best fighter in the army. Generally do very little to make other units better, but rather are practically units in and of themselves. While they might have an odd buffing ability here and there, their focus is to lead from the front. Examples include Chaos Lords, Ork Warbosses, Khador's Butcher. This can also include leaders who do the same thing but from range (many mages in
WHFB, the shootier Warcasters)
-The buffer: a leader whose primary role is to improve the fighting abilities of other units in the army. These leaders allow rerolls, grant saves/cover, increase movement speeds. Often limited in range, they generally will either move along with the army or will sit near a rear-line unit that benefits from its abilities most. Eldar Farseers are the obvious ones here, along with several Warmachine Warcasters.
-The tactician: this leader type grants mobility bonuses, adjusts deployment options, creates obstacles for the enemy, or helps make the battlefield more advantageous for his forces. This one can be quite dependent upon the game system: tacticians in Clan War often allowed for extra card draws, while in
40k tacticians often allow a player to adjust reserve rolls.
Are there any other general types of leader that you've experienced in games? Others that I'm missing, or have miscategorized? Please provide your own examples or discuss what's been presented.
Thanks!