The Rarest Pokemon Type Combinations

With the situation regarding Pokemon Bank making a fair deal of Pokemon hard to get, the series accidentally makes some type combinations really rare.

Pokemon Type Combinations Chart : r/pokemon

celesteela: Unused type combinations for Pokémon

What is the most common type of Pokemon? - Quora

Unused type combinations Gen V by AdeptCharon on DeviantArt

Keep That Catch Combo Going

Top 5 Strongest Type Combos

A chart with what type combinations are missing and an example for

Unused type Combinations Gen 1-7 : r/PokemonSwordAndShield

Best Pokemon Type Combos - Top 10 RANKED

Pokémon: 10 Rarest Dual-Type Combinations (& How Good They Are)

Types, Pokémon Wiki

Every Type Combination That Doesn't Exist RANKED