I ranked all 153 Pokemon Type combinations by similarity in Excel (link in comments) : r/pokemon

The Best Pokemon type combinations according to game theory

Type Combo Chart : r/pokemon

What is the BEST Possible Pokemon Type Combination?

The first Pokémon of each type combination : r/pokemon

Instead of unused type combos, which long-neglected type combos would you like to see re-used? Here is a list of type combos that have not seen a new Pokemon in over 20

New type combinations

Every Type Combination That Doesn't Exist RANKED

Pokemon Fans Are Suggesting 'Mons For The 9 Unused Type Combinations

Top 5 Pokemon type combinations

Which Type combination still exist for which there are no pokemon? - Anime & Manga Stack Exchange