I think most units are anti-armour. I assume this means tanks basically, but does it also apply to units with heavy armour like plate?
The Roadrunner, Sweeper, Diverbee, and Mastodon all have the anti-unit label.
The Pteranodon has the anti-tank label.
Also for units with the "assault" label: Catastrophe, Abrams, Warhawk, Battle Tortoise, Tyrant, Buzzard, Uragan, Libra, Rahn, Norio, do they have a balanced damage type? I think all of them are reasonably effective against infantry and tanks, but I can't be too sure.