What type of bee (bumble bee?) are contantly humming about the blue potato bush flowers, mostly touch and go - so difficult to photograph. But let me try and upload photos - big and 2 white stripes on the back.
Blue Potato Bush
Certified GKH Gardening Expert
I'm not familiar with the insects of your area, but if you take this photo to your local extension service then they will be able to tell you more about your native species. Here is the link to find the closest one to you: https://www.gardeningknowhow.com/extension-search/