Rhydon beats Snorlax without Surf, Jolteon, Gengar, Moltres, Alakazam (55% with Body Slam into Earthquake), Slowbro (52% with Earthquake spam), opposing Zapdos, and opposing Rhydon (Bubble Beam into Earthquake).
Slowbro beats Alakazam, Tauros, Articuno, Chansey, Moltres, Sandslash, and Starmie lacking Thunderbolt.
Zapdos beats Starmie, Exeggutor, Moltres, Gengar, Kabutops, and opposing Slowbro. It also beats Chansey with Toxic + Drill Peck + Substitute.
This team is particularly good against cores featuring Snorlax, Starmie, Alakazam, and Hitmonlee. It's slightly weak to Raichu, Snorlax with Amnesia + Thunderbolt + Blizzard, Tauros, and Jolteon.
Previous Version:
https://pokepast.es/fa856caf5fda46f0
