Pokémon Anime The Writers’ Decision on Ash’s Pokémon Return in His Only post-Journeys Comeback Pokémon Anime Work

Once the Pokémon anime executive has announced Ash’s only post-Journeys comeback anime work, it’s up to the writers to decide on which Ash’s current and former officially trained and/or bonded Pokémon, including those now in rotation, they should include in script for this work? So which of Ash’s Pokémon do you think will return in script for his only comeback post-Journeys anime work? Why? Please let me know, thanks.