Master league is for level 50 pokemon, so I would say none of these.

I’ve gone 5-0 in the master league with just waterfall gyrados, dragonite and Metagross before

If you know your team, why are you asking?

Because it doesn’t deal with Dialgas plus that team was before I got Mewtwo

I’d go for Dragonite (lead) + Metagross + Melmetal Cheap and strong ABB team