I remember looking this up a while ago and I can't remember finding the usually chart so I'll ask here :3c Wondering because I finally got my ability changed on my Shiny Linoone, and am hoping to snag xp candies
Potion Tiny Mushroom Repel Super Potion Poke Doll Super Repel Big Mushroom Full Heal Revive Hyper Potion Ether Max Repel Moon Stone Sun Stone Rare Candy Nugget Max Potion Max Ether PP Up Big Nugget Destiny Knot Leftovers Mental Herb Power Herb White Herb Balm Mushroom Max Revive Elixir Max Elixir Bottle Cap Source: https://bulbapedia.bulbagarden.net/wiki/Pickup_(Ability)#Pok.C3.A9mon_Sword_and_Shield
Note: These items are only available at certain levels (e.g. Potion can only be found at 1-10), and they have certain odds to be found (e.g. the potion is common to be found at Level 1-10). Visit my source for a full list of those odds and levels.
They can pickup a veraity of items and better items at higher levels. if you want to learn more here: https://bulbapedia.bulbagarden.net/wiki/Pickup_(Ability)