National

Entire National dex

Kanto

Red/Blue/Yellow Kanto dex

Original Johto

Gold/Silver/Crystal Johto dex—called the "New" Pokédex in-game

Original Hoenn

Ruby/Sapphire/Emerald Hoenn dex

Original Sinnoh

Diamond/Pearl Sinnoh dex

Extended Sinnoh

Platinum Sinnoh dex—an extended version of Diamond and Pearl's

Updated Johto

HeartGold/SoulSilver Johto dex—Gold/Silver/Crystal's, extended to add move-based Generation IV evolutions

Original Unova

Black/White Unova dex

Updated Unova

Black 2/White 2 Unova dex

New Hoenn

Omega Ruby/Alpha Sapphire Hoenn Dex—Ruby/Sapphire/Emerald's, updated to add new evolutions

Let's Go Kanto

Let's Go, Pikachu/Let's Go, Eevee Kanto dex