Well I would say Groundon, Rayquaza, regice, registeel, regirock, and blaizecan.
swampert or blaziken are the best type to beat gyms or Pokemon league
The best team you can possibly get in Pokemon Ruby would probably be:SwampertGroudonAggronFlygonGardevoirLinoon (For item pick up.)
Groudoun swampert at a high level
Sceptile,Mightenta,Walrien,Graveler,Groudon,Raicho
Pokemon Ruby Destiny is a hacked version of Pokemon Ruby for GBA that is kind of like Pokemon Red Rescue Team.
Pokemon Emerald, Ruby, and Saphire.
Team Magma is absent in Pokemon sapphire, but exists in ruby. Same with team aqua in ruby version, both teams only coexist in Pokemon emerald version
In Pokemon ruby, your rivals are team magma, not team aqua, so you cannot find Archie, only maxie.
You don't get the symbol in ruby.
Aggron and Rhydon are definitely the best Pokemon on Pokemon Ruby! Their big, strong and both are great and they're awesome!
Groudon is the best Pokemon in the game that is cachable.
Double Team