What pokemon are in what Raid tier?

Apparently there are different tiers of PokeRaids (see screenshot). Does the Pokémon you fight depend on which tier? And if so, which Pokémon belong to which tier?

screenshot of tiers


According to this list:

Tier 1 Gyms:

  • Quilava
  • Bayleef
  • Magikarp
  • Croconaw

Tier 2 Gyms:

  • Electabuzz
  • Muk
  • Magmar
  • Weezing
  • Exeggutor

Tier 3 Gyms

  • Alakazam
  • Arcanine
  • Flareon
  • Jolteon
  • Vaporeon
  • Machamp
  • Gengar

Tier 4 Gyms:

  • Blastoise
  • Charizard
  • Venusaur
  • Rhydon
  • Lapras
  • Snorlax
  • Tyranitar

Tier 5 Gyms:

These are apparently going to be Legendary Pokemon, but TBC and N/A