What's a good naming convention? I draw a pretty big distinction between earbuds that seal and earbuds that just sit in front of my ear canal. I have AirPods Pro for when I really need isolation, and regular AirPods for when I need hours of comfortable wearing. "Open-ear earbuds" would make sense to me.

Earphones are the ones that sit in the ear, and in-ear headphones or canalphones are ones that go in the ear canal. Earbuds originally meant earphones but now means both kinds.

Open-ear is more general cause there are ear-hook and clip-on models now.