Pokemon: 700+ Pokemon

[Setari]

With over 700 Pokemon (718, more accurately it looks like is all I could find on the internet), what's the most useful team to level in the game and sweep the elite four, or use in the endgame in Pokemon Omega Ruby or Pokemon Alpha Sapphire? The endgame meaning money farming in the Mauville restaurant or stuff like that?

Or even in competitive PvP gaming between people online? There's probably different teams for both, but I'd like to know if there are any, it'd be great to see lists and teams!

 

[DillyForReally]

It is all up to the player. My story team consisted of many Pokemon that can be obtained early in the game.

My team consists of:
Blaziken - Fire and Fighting
Ludicolo - Grass and Water
Altaria - Dragon and Flying (And my first fully trained, competitive shiny!)
Tailow - Normal and Flying
Sableye - Ghost and Dark
Gardevoir - Psychic and Fairy

Just train them well and you should be good.