I have no hints myself (yet) but my grandmother got these intriguing books for me at the library today, how sweet of her :love And if I read something particularly interesting or useful I will post it in this thread for sure :thumbsup
If they have a paper nest perhaps they are Paper Wasps! Neutral to beneficial for you garden (they eat insects that eat your plants) and shouldn’t attack unless intentionally disturbed. I would reconsider spraying them.
Here are some Paper Wasps that I allowed to nest on a kitchen window...