When I initially looked over your team, I noticed quite a bit. First, those are some insane looking EVs, and if you would like to share where you got them from and explain what thresholds they help reach, I would appreciate it. Next up, I noticed that you might not know about STAB, or same type attack bonus. Dragon type moves are only super effective against one type, so you are loosing a lot if you bring it on anything but a dragon type (which I added at the end, in case you might like it :D ). This also means that Heliolisk, a relatively frail pokemon, also doesn't do as much damage as another weather ball user potentially on your team might. Given that whimsicott can already counter garchomps well if you use moonblast on it, aerodactyl went and garchomp itself actually works well in that slot. Let's get into the details in a nice speed round:
Here Comes the Sun (Charizard-Mega-Y) @ Charizardite Y
Ability: Blaze
Level: 50
EVs: 19 HP / 8 Def / 16 SpA / 3 SpD / 20 Spe
Modest Nature
- Heat Wave
- Weather Ball
- Solar Beam
- Protect
Dragon pulse is not STAB: Weather Ball hits single targets stronger than a spread move, which is almost always 25% weaker than advertised
Hurricane is bad in sun: Solar Beam is a much stronger coverage option
Sir Froge (Venusaur) @ Leftovers
Ability: Chlorophyll
Level: 50
EVs: 13 HP / 5 Def / 32 SpA / 9 SpD / 7 Spe
Modest Nature
IVs: 0 Atk
- Giga Drain
- Sludge Bomb
- Earth Power
- Protect
Solar Beam may fail outside sun: Giga Drain increases survivability
Weather Ball is redundant when you lead this with charizard: Earth Power is very, and I mean very, good coverage
[Your Nickname] (Incineroar) @ Sitrus Berry
Ability: Intimidate
Level: 50
- Flare Blitz
- Fake Out
- Protect
- Parting Shot
You didn't want sneasler, so here is another pokemon with support you may like better. EV it how you like, I didn't include any dark attacking moves because of another addition...
Dust Bunny (Whimsicott) @ Focus Sash
Ability: Chlorophyll
Level: 50
EVs: 2 HP / 32 SpA / 32 Spe
Timid Nature
- Taunt
- Sunny Day
- Moonblast
- Tailwind
You already have leftovers: Focus sash guarantees at least one turn of use
Dazzling Gleam is a spread move: Moonblast is stronger
[Your Nickname] (Kingambit) @ Chople Berry
Ability: Defiant
Level: 50
EVs: 32 HP / 30 Atk / 3 Def / 1 Spe
Adamant Nature
- Kowtow Cleave
- Sucker Punch
- Low Kick
- Protect
Kingambit can use priority sucker punch. Also has low kick to counter tyranitar and other kingambit specifically.
[Your Nickname] (Garchomp) @ Haban Berry
Ability: Rough Skin
Level: 50
EVs: 2 HP / 32 Atk / 32 Spe
Jolly Nature
- Dragon Claw
- Earthquake
- Rock Slide
- Protect
Given how many dragon moves you used, it was only fair to give you a dragon type that can use them with STAB. Just be careful with earthquake. Rock slide counters other charizards.