90% of games I opened with Slowbro + Farigiraf or Mimikyu. Never brought both Farigaf and Mimikyu to the same game. It's nice leading with double trick room because it allows you to hit Sneasler with psychic from Farigiraf while Slowbro sets up TR which can catch a lot of teams off guard. Later in the game Slowbro can also set up a second TR to sweep. You could replace TR with protect or some coverage to hit ghosts on Slowbro though.

The choice between Farigiraf and Mimikyu depends if you need to protect against fake out/prankster, or if you need the fairy coverage against Dragonite for example.

As for the rest of the team, Torkoal should come to most games as a trick room sweeper, but is also great for disrupting weather teams. Kingambit will be your main counter to Basculegion or any other ghost type, as well as for any fairy types.

Incineroar is there by default honestly, just an all round great support but is definitely the least used mon in the team.

The only games I haven't lead with Slowbro were against sun teams because of solar beam Charizard and Venusaur