Whenever you see a piece of fanart with both Luz and Amity, do you classify it as Lumity Art or just a piece of Owl House Art?

Depends on how its drawn. if for example they are holding hands, or blushing at the other for example, its obviously Lumity. but if its something like a group picture it could be just a basic image

7661838
Honestly I just label it as Lumity art either way because it's Canon.

7661830
...lumity is just a sub category of owl house .. so both.