From Bulbapedia, the community-driven Pokémon encyclopedia.
This is a list of Pokémon by effort value yield and base experience in Generation VII.
When a Pokémon is defeated in battle, it will give effort values to the Pokémon that participated in the battle against it. The values shown below are the effort points that a Pokémon will give in Generation VII, and every four effort points a Pokémon has in a given stat will ultimately translate to an extra point in that stat (before Nature is taken into account) when the Pokémon is at level 100. Prior to Generation III, however, a Pokémon would actually give effort points equivalent to its base stats.
Base experience is a factor in determining how many experience points a fainted Pokémon will give to the Pokémon that defeated it.
In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, stat-based Candy that may be earned from catching or transferring a Pokémon corresponds directly with its EV yield in other core series games. For example, catching a Chansey may yield Health Candies of any size. For Pokémon that yield EVs for multiple stats, like Butterfree, Candies for one or both stats may be given.
List of Pokémon by effort value yield