Ooh, a new NPT! Let's hope this one doesn't get closed, or at least for awhile.
Anyway, let's see what I think Ash and Co. will hopefully have in Isshu!
Ash Isshu Team - Pre-Evolutions
Pikachu- Do I even need to write this one?
Mamepato- Look at Pikachu.
Mijumaru - Confirmed.
Moguryu - So far, I think this one could be a good wildcard. Could change once more Pokemon are revealed.
Unrevealed Fire Type - I don't want Ash to get Pokabu and we've already had Fire Monkeys, so hopefully an Unrevealed Fire Type would be good for his team.
Unrevealed Grass Type - Hopefully a Grass Type will come up that's good.
Iris's Isshu Team - Pre-Evolutions
Kibago - Look at Ash's Pikachu
Yooterii - To me, it seems like a good Pokemon for her and looks kind of cute, so I don't see Iris with big, bad Pokemon like Denchura
Emonga - It can fly, and Iris likes swinging on vines. Seems perfect for her.
Munna - Take a look at Yooterii
Dento's Isshu Team - Pre-Evolution
Yanappu - ...
Churine - Dunno, seems to me like it would fit him. It's a grass type, right.
Meh, I don't know what else to put for Dento, so I'll leave this the way it is, and change it up later on.
Now, onto evolutions:
Ash's Isshu Team - Evolved
Pikachu - ...
Mamepato Final Evolution - Has always happened for past Regional Birds.
Futachimaru - Was in the Beta Artwork, so it should be Ash's first Water Type to evolve, and once is perfectly fine, IMO.
Doryuuzu - If Ash gets Moguryu, it should definitely evolve, and looks like it could be a major powerhouse as Doryuuzu.
As for the unrevealed once I put, I'll have to wait and see what their evolutions look like, and what the Pokemon themselves look like.
Iris's Isshu Team - Evolved
Kibago - ...
Yooterii/Evolved Once - Depends on if it evolves, and what its evolved form looks like.
Emonga - Look at Yooterii
Musharna - Could see it evolving at one point in Isshu
I really don't know about Dento, and would have to see what happens once more Pokemon are revealed.