Celebrations Classic Collection Groupings - Pepper0ni/TTS-PTCG-Pack-Simulator GitHub Wiki
As far as I can tell, There are 5 different groupings of Classic Collection Pull Rates, which I am calling Rarest, Rare, Uncommon, Common and Garchomp. Exact Pull Rate Data per card is in the data Spreadsheet, the groupings are simply here for easy reading. Given the wide ranges it may be per-card rarity instead or more groups, but it would need a proper statistical analysis. n=9704
Common (1/34.5-1/40)
Dark Gyarados
Claydol
Rocket's Zapdos
Team Magma's Groudon
Imposter Professor Oak
Here Comes Team Rocket
Uncommon (1/45.5-1/48)
Rocket Admin
Cleffa
Blastoise
Birthday Pikachu
Venusaur
Garchomp (1/64.2)
Garchomp lv.X
Rare (1/82.8-1/101)
Donphan Prime
Reshiram
Luxray lv X
Zekrom
Guardevoir ex
Mew ex
Rare (1/120-1/135)
Umbreon star
Charizard
Mewtwo EX
Xerneas EX
Mega Rayquaza EX
Shiny Magikarp
Tapr Lele GX