Blaziken, Swellow, Graveler/Golem, Sharpedo, Linoone, Manectric
Blaziken: Sky Uppercut, Flamethrower, Strength, Overheat/Earthquake
-Sky Uppercut and Blaze Kick are STAB. Earthquake is coverage, mainly for use against Poison types. Strength is an HM. Overheat can be used over Earthquake for a higher powered attack, and since Strength and Sky Uppercut are physical, and you can always switch out for free after Koing the foe, there is no harm in using it.
Swellow: Fly, Aerial Ace, Return, Steel Wing/Facade
-Fly is the reason to use this guy, if that HM didn't exist we wouldn't need a Flying type. As is, you get this guy early and it has good stats, making it the choice for Flying type. Aerial Ace is more reliable, never missing, not needing the charge either, meaning it does more damage in two turns. Return is high powered STAB. Steel Wing is coverage against Rock types, although since it still doesn't do much you can just use Facade for amazing damage when you have status (I tend to hold of going to a Pokemon Center when I get burned.)
Graveler/Golem: Earthquake, Rock Blast, Double-Edge, Dig
-While Aggron is great and all, the Ground typing of Graveler/Golem helps out a lot ingame. Both are good Pokemon, just for this team I prefer Graveler/Golem. Graveler is a decent Pokemon, although if you are able to, do get Golem. Earthquake is STAB. Rock Blast is also STAB, being the best Rock type it can learn outside of the more difficult to obtain Rock Slide. Double-Edge is a very high powered attack. Always get a Golem with Rock Head so you can use this. Dig is STAB, although the main use for it is to get out of caves. This way you don't need to buy Escape Ropes or as many Repels, and as such are able to sell these items for a bit of an extra profit.
Sharpedo: Surf/Waterfall, Waterfall/Dive, Crunch, Ice Beam
-Shame not to use that high Attack, but it has good Special Attack and better moves there. Surf is STAB and the most useful HM in the game. Waterfall and Dive are also HMs. Waterfall is a better attack but I think it is a less useful HM. You can use both Waterfall and Dive if using Surf on Linoone. This is less power but more utility. Crunch is STAB. Ice Beam is type coverage.
Linoone: Return, Shadow Ball, Cut, Surf
-Get it at the start of the game. I carry around five (Zigzagoons) until I fill up my team with other members. A good HM slave, especially with Pickup, the best ingame ability. Return is STAB. Shadow Ball is coverage. Surf is also coverage but it is an HM to boot. Cut is STAB, although it will really only be used as an HM.
Manectric: Thunder/Thunderbolt, Rain Dance/Flash, Thunder Wave, Thief
-Since this guy is lacking in movepool (not even getting Flamethrower or Overheat yet), you have room to spare for using Rain Dance and Thunder. Thunder Wave is to help catch foes. Thief is to steal items from wild Pokemon. You can also replace Thunder for Thunderbolt and Rain Dance for Flash.