Grookey
Good set, nothing you absolutely have to change. You may want to try Knock Off or Drain Punch over Wood Hammer so you aren't completely walled by Ferroseed. While Wood Hammer is a tremendously helpful move, removing Eviolites or gaining HP back (plus hitting Steels) is usually more helpful when you also have Grassy Glide. If you really want Wood Hammer, use it over Swords Dance, as SD + U-turn isn't the best of combinations.
Grookey @ Life Orb
Ability: Grassy Surge
Level: 5
EVs: 236 Atk / 36 Def / 236 Spe
Jolly Nature
- Grassy Glide
- Knock Off / Drain Punch
- U-turn
- Swords Dance / Wood Hammer
Ponyta-Galar
The set works, but I prefer Dazzling Gleam over Calm Mind to take out Scraggy. Your current setup is plenty viable though, so no complaints here either.
Ponyta-Galar @ Eviolite
Ability: Pastel Veil
Level: 5
EVs: 236 SpA / 76 SpD / 196 Spe
Timid Nature
- Calm Mind / Dazzling Gleam
- Morning Sun
- Psychic
- Mystical Fire
Carvanha
Carvanha isn't very good in the current meta, so you should use the undeniably best Water type in the tier: Mareanie. It's incredibly bulky, it offers more utility, and it has a better typing than Carvanha. Here's Smogon's set:
Mareanie @ Eviolite
Level: 5
Ability: Regenerator
EVs: 196 HP / 20 Def / 92 SpA / 180 SpD
Bold Nature
- Scald
- Sludge Bomb
- Recover
- Toxic Spikes
Mienfoo
Mienfoo has no use for Substitute. Swap Berry Juice with either Eviolite or Life Orb, and use Fake Out over Substitute, and swap Swords Dance for U-turn. Fake Out can break Abra and Diglett's Sashes, while breaking Magnemite and Onix's Sturdy. U-turn lets you pivot to keep momentum, and abuse Regenerator recovery.
Mienfoo @ Eviolite / Life Orb / Berry Juice
Ability: Regenerator
Level: 5
EVs: 236 Atk / 36 Def / 236 Spe
Jolly Nature
- U-turn
- High Jump Kick
- Acrobatics
- Fake Out
Pawniard
Basic and effective, good set. Nothing I'd change here.
Vullaby
Again, good set. Nothing I'd change here either.
You've got a pretty good team, it should be able to secure you quite a few wins. Hope I helped, and good luck!
Pokepaste with changes