Pokémon Anime v2.0: The Writers' Decision on Ash's Pokémon's Physical Comeback in His Post-Retirement Anime Series

As of the end of his final pre-retirement episode from his Pokémon anime, The Rainbow and the Pokémon Master!, I knew that Ash had originally put all his Pokémon in rotation, including the ones at Professor Oak's Laboratory and also at Professors' Kukui and Burnet's home, including from Pidgeot to Dracovish. However, unfortunately, 16 out of Ash's current and former official trained/bonded Pokémon that had not physically appeared and/or had not been mentioned in any of his episodes from the To Be a Pokémon Master sub-season from the Ultimate Journeys season from the Journeys series of the Pokémon main TV anime had included Butterfree, Anthony's Primeape, Noctowl, Larvitar, Torkoal, O's Ambipom, Gliscor, Gible, Greninja, Goodra, Lycanroc, Nebby, Naganadel, Melmetal, Lucario and Dracovish. Why this is because it was a bit too difficult for writers to fit them all into the script from that anime sub-season of his I think. So I have thought that the anime executive have finally announced Ash's comeback as in his post-retirement anime series, but it's up to the writers' own decision on which of his current and/or former official train and/or bonded Pokémon they make their own physical comeback as in his post-retirement anime series. Let me ask you the questions that I have just added below:

1. Do you think that all of Ash's Pokémon that he has right now kept in rotation will make their own physical comeback as in his post-retirement anime series? Why?
2. Do you think that some of Ash's Pokémon that he had originally kept in rotation will be physically dropped out from his post-retirement anime series, while the rest of them will make their own physical comeback as in that anime series of his? Why?
3. Do You think that any of Ash's former official trained and/or bonded Pokémon, like Greninja, will make their own physical comeback as in his post-retirement anime series? Why?

Please let me know, thanks.