Sorry I know I'm very late. This is one of my first attempts at rating a team so, I'll try my best. I'll start with Scyther.
Scyther, known far and wide for it's ability. I see you're utilizing it, but what's the point of Air Slash? It doesn't make use of the ability. You can switch it for Aerial Ace which will, if I'm correct, Technician will bring Aerial Ace to a 90 BP, same as Air Slash. On top of that, you'll have infinite accuracy with it. Don't put Swords Dance. You're running Life Orb and EVs and Nature take care of Attack.
- Take out a Life Orb and put Leftovers instead.
No item on Spritomb? You can try Leftovers. Why do you have Sleep Talk if you have to sleep inducing move? Switch Sleep Talk for Shadow Ball (STAB + Good Power + SE vs. other Ghost types). Switch Mild Nature for Modest nature as you're not using attack.
Why Iron Defense? His Defense is already indescribably good. Switch for Stone Edge or Rock Slide whichever you like. Switch Sturdy for Heavy Metal so Heavy Slam becomes more powerful. But yeah that's all I have to say for Aggron.
Switch Lightningrod for Static. No one in there right mind would use an electric move on Manectric. Static will paralyze them. I noticed you have Crunch and Swagger. Swagger is a very risky move as the confusion may not work at all and the opponent's attack is still boosted. Crunch won't be good on a special Manectric. If you still want a dark type special move, you can go with Hidden Power Dark or Snarl (HP Dark recommended). Instead of Swagger you can have Ice Fang for ground types. Main reason I don't want Swagger there is because with your Life Orb you'll just die faster.
Don't give Cryogonal Acrobatics because it's clearly meant to be a special Pokemon but you're making it mixed. Switch Acrobatics for Slash (High crit ratio, not much else in the movepool) and switch Flying Gem for Leftovers.
First thing I noticed: Ability. Make the ability Unaware, it's a great ability and has helped me several times. Switch Absorb Bulb for Leftovers. I can see you're running a Stockpile set so that's good. The Quagsire is fine mostly.
Hope I helped.