If I had to choose a starter pet for everybody, I would choose soral.
soral is a very rare pet that can only be found at the beginning of the game.
soral's strongest move is storms coming. So choose soral.
the rest of your team should have embershed, ice creator and fathom. My favorite move is zero but you could also use geyser which you learn at barnacle cove.
I am a prodigy user and my name is Howard ironhunter.