Given most bats live in colonies, I would think they'd be more associated with being social:
https://www.wildlifeonline.me.uk/animals/article/bats-behaviour-social-structure
Some species even share food with each other like bees when returning to roost, so that stragglers with less luck in foraging don't starve.
That seems a lot more social than butterflies that swarm like most schooling insects to inhibit predation, facilitate breeding, and share acclimated housing. If it's the butterfly-to-flower relationship at focus, then social as a bee who share their social "contacts" with others by dancing their butt's out seems more apt.