Swashbuckler

Swashbuckler is the multiclass option when you get both level 5 in Warrior and level 5 in Thief.

The Swashbuckler gets a +1 to Combat interaction at level 1. They get a +1 to Social interaction at level 6. They get a +1 to encounters with Monstrosities at level 3, that bonus increases to +2 at level 8. They get a +1 to encounters with Humanoid mobs at level 4, that bonus increases to +2 at level 9. And finally, they get a +1 to encounters with Fiend mobs at level 7.