These are the Pokemon I used during my playthrough of Sun. I decided to do something different this game for fun and wonder traded for a random starter and I got a level one Jangmo-o. From there I just kind of used whatever I got my hands on to try out different things that I would've otherwise overlooked (I didn't expect Lycanroc Midnight to be findable wild in Sun but it's rocks were surprisingly useful against the Elite 4)
The team that I used to beat the Elite 4 was:

Majesteen the Tsareena (Really carried the team with it's bulk and Trop Kick)
Heart the Kommo-o
Fairy Dust the Ribombee
Scuba Spider the Araquanid
Jacob the Lycanroc
Baile the Oricorio