I only recruit reckless officers.
They charge the enemy and break their fleet up. If they're flying unending barrage type ships (their dissipation is higher than all weapons firing and shields up), they basically just get on someone, kill them, and then go after someone else. SO MUCH DAKKA! Also, be aware that they will explode, so embrace D-Mods.
The Mora covered with dual light machineguns and medium breaches works great here. If it is faster than its target, it just chases them down, overloads them, and slaughters them.
They work great on Phase Ships as well, especially the frigate varieties. A dead enemy is a harmless enemy.
Aggressive is good, too.
Steady is just basic ship behavior with skills.
Cautious is not useful for how I fight. I guess it might be good on max range laser ship, but I don't usually have many of those. An example would be the Laser Wolf or Laser Medusa, which just carry gravaton beams and tac lasers with extra range. They kill things excruciatingly slowly.
Timid Officers are a big no. I don't think there is a way to have them be a higher priority for the enemy fleet, so those officers' ability to avoid enemy ships and win is mostly useless AFAIK.