I recently discovered this set of YouTube videos for grid based quilting. They are from 7 years ago but I like the idea and when I get around to quilting a pinwheel party quilt, I plan to use this idea. Whether I can pull it off or not is another discussion. But she makes it seem doable. There is a series of 52 videos each with a different design.
Here is a link to one of her videos and a link to her website.
https://quintessentialquilting.com/
https://www.youtube.com/watch?v=4AUgehjtYk8