I really like the team Keta uses in Amethyst Grotto. It's full of memories from his journey in Aevium. I don't know what his teams are on Easy or Normal, but Intense went like this:
Lucario - His first Pokemon. He left for Aevium with it.
Tessie (Lapras) - Given to him as an egg by his family when he left Four Island for Aevium.
Ninetales - Given to him by Tesla as a Vulpix when he left for Sheridan.
Gabite - Found in Carotos Mountain while looking for a place to rebuild Sheridan.
Roselia - Found near Vivian's Tree, where he and Taelia were married.
Musharna - One of Taelia's Pokemon. I feel as though it should be her Gallade, but that would probably be brutal for the player to fight.