Your team's typings aren't that great. Arcanine is useless with Blaziken, and Meowstic is useless with Starmie. Just put them in rotation until you get to fight where you will need them.
You should should swap them out for either your Hippowdon, a steel type (I recommend Aron), a grass type, or a dark type.
Your movesets also could use some improvements. All of your mons can be taught better moves from the move relearner which you should have access to now.
Blaziken can learn High Jump Kick from the move relearner so replace Double Kick with that. It can also learn Fire Punch and Flare Blitz, both much better than Blaze Kick.
If you're going to continue using a Meowstic, Female is much better than male. The moveset is extremely versatile, and having a defensive mon is a waste for most battles.
For NIdoqueen, replace Venom Drench with Venoshock or Sludge Wave, Poison STAB is much better than lowering stats. Toxic Spikes isn't that great either, maybe swap that out for Superpower for a strong physical move.
Arcanine doesn't need Heat Wave. Crunch or Outrage is better but it seems you evolved it without learning those moves so that moveset is fine.
Meowstic is fine. A pretty useless mon at that point in the game so I would either swap it out or start using a female meowstic which has a better movepool.
Ampharos shouldn't have Electro Ball without Thunder Wave and with Discharge. It's a pretty useless move. Swapping Electro Ball for T-wave or Signal Beam is probably your best bet.
Could you post a screenshot of your boxed mons? I'd like to see if there's any I could recommend for your team or to put on rotation.