Rate my team

[Monkeypants786]

Hello, can you please tell me if my team is good?

Here are my pokemon and their levels, stats, natures, held items, and movesets, along with abilities.

Gengar Level 99.
Special Sweeper.
Held item: Gengarite, so it mega evolves.

Moves: Toxic, Thunderbolt, Dazzling Gleam, and Dark Pulse.
Nature: Modest
Stats: Attack 160 defense 158 speed 264 sp. atk 325 sp def 190
Ability: Regular: Levitate Mega: Shadow Tag

Delphox Level 38 (I'll level it up later.)
Not sure of purpose yet, probably special sweeper.
Held item: Flame plate (another pokemon has flame plate, but i traded for this pokemon, and it has this already)
Moveset: Psy beam, Howl, Mystical Fire, Ember.
Nature: Jolly
Stats Attack 59 Defense 71 Sp atk 90 sp def 83 speed 103
Ability: Blaze

Zoroark level 73
Special sweeper
Holding black glasses
Moves: Bite, toxic, flamethrower, hone claws
Stats: atk 187, defense 115, sp atk 215 sp def 139 speed 203
Nature:Gentle
Ability: Illusion

Flareon Level 77
Physical Sweeper
Nature: Hasty
Stats: atk 229 def 116 sp atk 191 sp def 185 speed 158
Moves: Flare blitz, quick attack, protect, strength
Held item: Flame plate
Banette level 47
Hybrid sweeper ( both physical and special )
Ability: Frisk Mega: Prankster
Nature: Naughty
Moves: Shadow ball, sucker punch, embargo, snatch
stats attack 136, defense 66, sp atk 93, sp def 63, speed 68
Held item: Banetteite

Blastoise level 36
Nature: Impish
Abiltity: Torrent Mega: Mega Launcher
Moves: Skull bash, Aqua tail, surf, Water pulse
Held item: Blastoisenite

Blastoise Banette and Delphox, which are below level 50, I will grind so they get to level 50.