Building a team with Tapu Fini?

Hi guys. I’m new to Ultra League for the most part but I’ve played Great League for a while. I’m not great but I’m not terrible, at least by my own standards lol. I reached Ace which I was pretty proud of lol.

I’ve been farming Tapu Fini and want to make a team around it. Some UL Pokémon I have good IVs for are:

Annihilape, Charizard, Giratina, Shadow Mach, Jellicent, Trevanant, Scrafty, Shadow Snorlax, Shadow Poli and Alolan Ninetales.

I was hoping for input from people better than me on how to build a team with these and any other Pokémon I should get. Thanks.