I have created a mish-mash of unit types. Each of these has slightly different characteristics. Along with rating each unit as Superior, Average or Inferior - and adding different attributes where necessary - allows me to create an army list quickly and easily but which still has a great deal of individuality.
Lore units
Lore units are powerful units that do not fit into the other categories. They have there own category so that rules that specifically affect troop units or characters do not apply to them.
Deity
Any god, demon or similarly powerful supernatural creature. Powerful, but will be driven off the field if it loses any combat. Will draw Lore Cards of a type dependant on the Deity's role - for instance a Fire God would draw Fire Lore Cards.
Dragon
Similarly powerful to a Deity, but has a ranged attack to represent it's breath weapon as opposed to a Deity's Lore Cards.
Airship
A large, single airborne unit. Will either be of advanced technology or magically powered, but the results are treated the same either way.
Monster
A big, nasty critter. Giants, Trolls and the suchlike belong in the category.
Characters
Representing not just a single powerful individual but also, possibly, such things as a coven of witches or a hero and his entourage.
Hero
A warrior - the character type that excels at beating up the enemy. Normally draws Warrior Lore Cards to represent special abilities.
Paladin
He has the strength of ten as his heart is pure. Also very resistant to opponent's Lore Cards. Powerful, but does not draw Lore Cards.
Rogue
Any character that use stealth as opposed to muscle to achieve his ends. Thieves, rangers and assassins, for instance. Normally draws Stealth Lore Cards.
Magician
Sorcerers, wizards...you get the drift. Normally draws Sorcery Lore Cards.
Cleric
Priests and shaman. Resistant to opponent's Lore Cards, and normally draws Priest Lore Cards.
Musician
Cheap and rather useless on their own, but they do lend support to nearby units. Does not normally draw Lore Cards.
Troop units
The rank and file of an army.
Flyer
Any aerial troops - from winged demons to swarms of bats.
Cavalry
Bog standard mounted troops. The mounts themselves do not matter, although troops mounted on more aggressive animals will tend to be graded as Superior troops.
Elephants
Troops mounted on elephants, mammoths or similar creatures.
Chariots
Troops in chariots. Nuff said.
Beasts
Smaller creatures that fight in packs or swarms - lizards, rats and sabre-tooth tigers are examples that spring to mind from the army lists.
Swords
Foot troops fighting effectively with bladed, cutting or concussive weapons.
Spears
Foot troops armed with spears or pikes fighting as a shield wall or phalanx.
Shooters
Foot troops armed with missile weapons fired as volleys from a distance.
Artillery
Catapults ranging in size from a ballista to a trebuchet, and weapons of a similar effect.
Lurker
Troops that lurk in dark corners and try to take the enemy by surprise. Scouts and some creepy crawlies can fall into this category.
Horde
Peasants, zombies and anyone else fighting by force of numbers rather than any real skill. There's an almost limitless supply of them!
Skirmishers
Foot troops armed with missile weapons but fighting up close in a loose formation, ready to run away from a combat they're not winning.
War Wagons
War Wagons, battle towers, steam tanks and the like. Fairly hard and they have a ranged attack.
Mounted Archers
The mounted equivalent of Skirmishers.
Knights
Like cavalry, but most effective when charging.
Warband
Fierce tribal warriors. Like Knights, most effective when charging.
Gunners
Foot troops armed with handguns. muskets or something similar. They are slightly more effective than Shooters but cannot move and fire in the same turn.
Cannon
Bombards and big guns. Slightly longer ranged and more effective than artillery.
Bombardiers
They've got grenades and they know how to use them. Kind of. Dangerous to all around them.
Expendables
Historically this would cover scythed chariots and the like, but expanded here to include Goblin Steam Cars and anything else that you would point at the enemy and let go.
Auxilia
Lightly equipped close combat troops, good performers in bad going and capable of evading close combat.
Baggage
Army supplies. Gives a small bonus to an army if in play, but also gives the opposing army victory points if destroyed.
And finally four ship units of increasing size, included for beach landing scenarios and the added bonus of naval battles when the full campaign gets going:
Boat
Sloop
Galley
Warship
You may notice that Commander is not listed as a troop type. The Commander must be nominated from the units in the army. and may be any unit allowed by a given army list.