This is such a good topic. I wasn't familiar with the blooming nine patch, and now I can't wait to try one!
I really enjoyed making this pattern called Rear Window by Blue Underground Studios. Figuring out the pairings of frames with rectangles and of the 4-patch block fabrics is my favorite sort of quilting activity.
https://www.etsy.com/listing/1120265...FYEvgQodIMQGRg