From Bulbapedia, the community-driven Pokémon encyclopedia.
Each item has an index number that identifies it in any game. The following list enumerates them according to the way they are stored in the Generation VIII Nintendo Switch games.
Rows highlighted in different colors were introduced in different versions or games after the original release of Pokémon Sword and Shield (Version 1.0.0).
Coming into Generation VIII, the names of several items were changed. Internally, the names of the Journal/Guidebook, Lunar Wing/Lunar Feather, and Secret Potion/Secret Medicine also changed within the generation (seen above) for their reappearance in Brilliant Diamond and Shining Pearl.