4 comps
5s Melee Cleave
The default competitive 5s archetype: stacked melee burst (warrior + rogue) behind two or three healers. 5s in TBC is less rigid than 2s/3s — think in team archetypes, and melee cleave is the highest-floor one.
Warrior / Disc Priest
More proactive than Warrior/Paladin — the priest brings Fear, dispels, and Mana Burn so you can both kill through peels and win the long game. Higher ceiling, lower floor.
WLD (Warrior / Lock / Druid)
Warrior/Lock pressure married to Druid mobility and Cyclone. Constant Mortal Strike + DoT damage while the druid kites and locks the enemy healer out with Cyclone. Strong cleave with real staying power.
WMP (Warrior / Mage / Priest)
Trade RMP's rogue for a warrior: less CC on the kill target, more raw burst and healing pressure. Shatter + Mortal Strike stacks huge damage while Poly and Mana Burn lock the enemy healer.