Are you looking for the commercial comforter type of look and feel? That is a more modern look and, as others have indicated, high loft polyester batting with minimal quilting will give that effect.
Traditional quilts have a look and feel that is quite different from the above. Traditionally the batting was 100% cotton. This kind of quilt is thin by today's "comforter" standard; however, this kind of batting becomes softer with every wash so traditional quilts end up being very soft and "comforting" in a different way. They would not be stiff. Things that can make a quilt stiffer are lots of close machine quilting (especially with regular thread instead of fine thread) and battings that are needlepunched through scrim (such as Warm n Natural).