First, sorry for my english. you will surely see several grammatical errors.
Didn't actually think of N for the Masters Eight! That would be an interesting one. I ruled out Unova since Iris was the champion and ranked lower than the eight, but N could still make sense. Originally, I hoped for Tobias and then started to think we would get another Galar gym leader, like perhaps Nessa, but it does kind of make sense for Ledon & Raihan to be the two best in Galar though. I feel like Steven would beat N, though I do agree with your other matchups (and I feel like Leon should beat 2 champions before fighting Ash). What do you think the other teams will look like? Mostly the game teams?
Would Ash's final team be just for the fight against Leon? Do you seem him using other Pokemon against Raihan & Cynthia? As much as it makes sense to use his best against Leon, I feel like they're going to have Ash uses his Journeys team against Leon. Hopefully that is not the case for other matches.
So, it was outright confirmed that the Masters Eight battle tournament-style, correct? Guess it makes sense than to expect Ash to face everyone in the Masters Eight. Maybe we could even see Leon or Cynthia beat a champion before fighting Ash, making the battle even more tougher for him.
I'll post my hopes for the Masters Eight tournament when I am done planning it. I'm hoping for it all to be 6 on 6.
I thought about N, because Iris was already defeated, and Alder is no longer a champion. and I do not see any character who can represent the region.
I can see a 3vs3 battle against Raihan.
Probably Sandaconda/Flygon/Duraludon. Ash uses Dragonite and other reserves.
Vs Cynthia, Infernape will be the Star, and the Rest of the Galar Team (Gengar, Sirfetchd and Dracovish).
Cynthia's Team: Garchomp, Spiritomb, Glaceon, Roserade, Togekiss and a new Galar o Hisui mon, maybe a Hisuian Arcanine.
And Leon Team be: Charizard, Dragapult, Mr.Rime, Rillaboom, Rhyperior and i dont know why but i can see a Spectrier on his Team. Leon needs something special to be the Number One.
I discarded Aegislash because already saw the one with Sawyer in a League, and feels repetitive, (by the same, i didnt put gastrodon on Cynthia's Team) and Iris already use Haxorus.
I dont expect to see much of the other than ash's battle.
Diantha uses Gardevoir, maybe Gourgeist and I would like to see Aurorus, because we hardly saw it in the anime.
If they want to make her a formidable opponent, she might have a Diancie.
Steven: Metagross, Claydol, Aggron.
Lance: Shiny Gyarados, Dragonite, Aerodactyl.