Fabrics that are lightweight and soft are similar to organza, includes chiffon, tulle, georgette, and voile. Compared to organza, chiffon is more flowy and tulle is more netlike and commonly used as the inner layer of bridal wear while geogette is a more textured organza.
Although, these fabric are in the same categories, we can conclude they are slightly similar to organza but not same as the organza fabric.