I have not tested it hardly at all, but this is a modified version of the 1.0.1 Scarlet cheat from the first page, with every legal Pokémon added to be caught. Kinda. Scarlet is doing something weird with the internal id that past games (besides Legend Arceus) hasn't done before, which is changing the order.
All Pokémon up to gen 7 should work correctly, but gen 8 is off somewhere. At the end I have cheats named "Encounter 1" through "Encounter 110", which covers all of the new Pokémon plus some extra (Encounter 1 is actually Sprigatito, 88 is Miraidon). Make sure you have saved before trying some of the unknown ones.
This will most likely be fixed once a proper internal id list is put out.