Unfortunately, as was the case with Pokémon Sword and Shield, you will not be able to transfer every Pokémon from Pokémon HOME into the newest generation of games. Since there are now more than 1,000 Pokémon in the National PokéDex, Scarlet and Violet do not support transferring Pokémon from all of the previous generations. Only the Pokémon that are available in the Paldea region will be able to be transferred into Scarlet and Violet from HOME.