Yes, I think utility quilts is the best description. I once attended a showing of vintage quilts from the south, made by black women, that had quilts very similar to the ones you like. They had several traditional quilts hung at the entrance, and the contrast was startling. The African American quilts were ***alive***; the traditional quilts looked very static when placed nearby. I have always regretted not purchasing the book of these quilts that was available for sale at the gallery showing; I've never run across it again.
These quilts were made for utility use out of whatever was available, and the women did not have access to rulers; they just cut and fit whatever they had. You'd think the result would be drab, but instead these quilts were vibrant and timeless; they could have hung in a contemporary art gallery and won prizes!