Horde worst: Striker, Combat Medic
It’s only 50% bleed on Breaker, which is the lowest compared to how much Blademaster and Protector can do. I’m not sure if Striker’s boss killing potential is still around.
Combat Medic deals the least damage and mostly a glorified medic and tank.
Escape worst: Slugger, Combat Medic
Which hive has a lot of Frag Grenades? On Master, they may take 2+ Grenades to kill a single thing.
Team mates can revive each other so Combat Medic isn’t needed much. The Lancers don’t appear too often anyway.
Horde best: Tactician
It doesn’t require taps for Stim, ammo boxes or Lockers. It can be a boss killer and can work well with Demolitions. It’s simply versatile, and it’s great for +1,000% Fort Cost modifier because it can give everyone ammo from Resupply and Damage Resistance from Healing Module.
Escape best: Jack, Tactician
Jack was probably too strong that it never made it in. 
Tactician’s almost a must-have in your Custom Hive “Nightmare”, The End, The Last Stand and would be really useful on Melee Brawl to give ammo for weapons early. It also gives ammo on Gauntlet so that Anchor, Infiltrator, DB weapon classes can work better, because there’s barely much ammo boxes. It works best both outside and inside venom, and very versatile when it excels at Hammerburst and explosives.