Virizion should run max Attack and max Speed. What KOs does it avoid with its current spread? What I said about Virizion also applies to Cresselia, Escavalier and Drapion.
Mixed Electivire is better than pure physical Electivire because it's not entirely crippled by burn:
-Wild Charge
-Flamethrower
-Earthquake
-Ice Punch
Nature: Naive/Hasty
EVs: 248 Atk/36 SAtk/224 Spe
Item: Life Orb/Expert Belt
Ability: Motor Drive
IDK how CM Cresselia fares, but try out these sets too:
-Psychic/Psyshock
-Moonblast
-Thunder Wave/Toxic
-Moonlight
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
or
-Substitute
-Calm Mind
-Psychic/Psyshock
-Moonblast
Nature: Bold/Timid
EVs: 248 HP/116 Def/144 Spe
Item: Leftovers
or
-Reflect
-Light Screen
-Lunar Dance
-Thunder Wave/Psychic
Nature: Timid
EVs: 252 HP/4 Def/252 Spe
Item: Light Clay
I think you could use a hazard setter in Cresselia's place, like Qwilfish, Omastar, Uxie or Mesprit:
Uxie:
-Stealth Rock
-Psychic
-U-turn
-Thunder Wave/Yawn
Nature: Bold
EVs: 252 HP/152 Def/104 SDef
Item: Leftovers
or
-Reflect
-Light Screen
-U-turn/Memento
-Stealth Rock/Thunder Wave
Nature: Jolly
EVs: 252 HP/4 Def/252 Spe
Item: Light Clay
or
-U-turn
-Zen Headbutt/Thunder Wave
-Stealth Rock
-Trick
Nature: Jolly
EVs: 252 HP/4 Def/252 Spe
Item: Choice Scarf
Mesprit:
-Stealth Rock
-Psychic
-Ice Beam/Thunderbolt
-U-turn/Healing Wish
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Leftovers
Qwilfish:
-Spikes
-Waterfall
-Taunt/Thunder Wave/Poison Jab
-Pain Split/Destiny Bond
Nature: Impish
EVs: 252 HP/4 Atk/252 Def
Item: Black Sludge
Ability: Intimidate
Omastar:
-Stealth Rock
-Spikes
-Scald
-Ice Beam
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Shell Armor
Knock Off > Crunch on Drapion; swatting away items is incredibly useful this time around:
-Knock Off
-Pursuit
-Poison Jab
-Earthquake/Aqua Tail
Nature: Jolly
EVs: 28 HP/252 Atk/224 Spe
Item: Choice Band
Ability: Sniper
or
-Swords Dance
-Knock Off
-Poison Jab/Earthquake
-Taunt
Nature: Jolly
EVs: 140 HP/144 Atk/224 Spe (avoids the 2HKO from Cut Rotom's Volt Switch and outspeeding regular Rotom)
Item: Black Sludge/Lum Berry
Ability: Battle Armor
I hope you realize that Escavalier gained Drill Run in the generation shift to let it handle Steel Pokemon more easily. Iron Head already handles Fairy Pokemon, while Megahorn already handles Grass Pokemon, so idk why you even have Poison Jab in the first place:
-Megahorn
-Iron Head
-Drill Run
-Pursuit/Knock Off
Nature: Adamant
EVs: 248 HP/252 Atk/8 SDef
Item: Assault Vest
Why do you even have Gunk Shot on Cinccino? Tail Slap already hits Fairies hard enough:
-Tail Slap
-Bullet Seed
-Rock Blast
-U-turn/Aqua Tail/Wake-Up Slap
Nature: Jolly/Adamant
EVs: 252 Atk/4 SDef/252 Spe
Item: Life Orb/Choice Band/Choice Scarf
Ability: Skill Link