[@Near] Prints Avoid and I have Venipedes, so...XD

All the types Sacha/Placide has an affinity with are specifically types that psychic are weak against. This is due to the fact that the psychic type weaknesses are based off common fears, being ghosts, creepy crawlies, and the dark, and thus it'd make sense that these are the three types that are most commonly feared in the Pokémon world.

Mie is sort of out there since she's the only one of her Pokémon who is not only not a dark, bug, or ghost type, but is the very type that is weak against these. She's justified in that Hypno is also considered pretty creepy.