Z-A teams

If you use ahnilape and a guogest you can make any pokemon ghost type with trick or treat and use aniapes moves that boost damage and criticl hit rate and use rage fist to almost one shot any roge mega.

My entire playthrough, near enough, used Meganium, Gardevoir, Talonflame, (Alpha) Barbaracle, Beedrill, and Ampharos!

For the Mega Dimension DLC, that default changed to Meganium, Gardevoir, Delphox, (Alpha) Barbaracle, Diancie, and Ampharos!

I tend to leave my Shiny Pokémon at the Evolution stage I met them at, away from the default team generally, and evolve one of them once I meet with another of the same species! My team often consists of the first powerhouses available to me when I wish to improve my type coverage. In my first ever playthrough of X, I actually named each member of the team after a synonym of 'Friend', 'Buddy', 'Pally', and I should probably have applied that in PL:Z-A!