Jolteon is better off using Leftovers or Life Orb depending if you want it to stay for longer or hit harder. Most common sets I see lately are Wish+Growth/Heal Bell+Tbolt+Hp Ice or Growth+Tbolt+HP Ice+Signal Beam/Hyper Voice or Substitute+Toxic+Tbolt+HP Ice.
Dusclops doesn't really do anything with that set, Arcanine/Milotic are free switches and can just Toxic you since you have no Toxic switches for those outside Metagross, which really wouldn't want to come in vs a Flame/Surf. So you should probably consider something like Seismic+Toxic/Sleep Talk+WoW+Rest and invest SP Def Evs on it.
Metagross CB should run speed to outpace some walls or even some wallbreakers like Ada max speed Swampert/Jolly Ursaring/etc. Aim for 113/117 or even 122 speed with Meta imo. Also no point using Double Edge, Pursuit/Trick are better choices.
Swampert set you got there looks like free Skarmory switch and you have no spinner. I'd probably consider CB Swampert or Mixed HP Elec or just remove it to place a spinner on ur team like Cloyster/Starmie.
Flygon looks interesting but I doubt you accomplish much with that set. You probably won't want to stay locked on EQ with a Specs band for example, slap a Life Orb on it and hope it doesn't get walled by like Milotic/Gyarados/etc. Not really a fan of max special Flygon in this game since it doesn't learn any cool special STAB move. CB/Scarf/Mixed Full Attack with Fire Blast are usually your best options.
Breloom should not run SD+Focus Punch, makes 0 sense. Either go Substitute+Spore+Focus Punch+Bullet Seed or if you wanna run SD then Superpower+Return/Bullet Seed+Mach Punch/Spore+SD should be what you're looking for.