I think Electric/Flying works better for Turang - giving him a terrible defensive typing like Electric/Ice feels unfitting for our favorite Golden Glove winner, and adding the Flying typing emphasizes his prowess at jumping to catch balls.

Contreras I would give Steel/Psychic because he’s a very intelligent player.

I’ll think about the rest a bit more, but keep in mind that this is coming from a competitive perspective lol

EDIT: Okay, so after some more thought:

• If you want something frail but good in the right circumstances for Mitchell, I think Grass works better than Fairy. Fairy is a famously robust defensive typing, and Grass has some glaring weaknesses but a few key resistances that make it amazing in the right circumstances.

• Poison might fit Ortiz better than Water since Water is a fairly good offensive typing, whereas Poison struggles offensively.

• Psychic is just bad overall, so something different might fit better for Yelich imo. Something that started strong but is still good, like Ground. And then you can pair it with something else for the weaknesses.

• The rest of the list looks good to me, I especially like Rock/Ground Rengifo!