Board Thread:Off Topic/@comment-24993958-20160607185611/@comment-26397825-20160608013949

Technically all Schnee's semblances are unique in the way that they are the only people with a hereditary semblance. They are just not unique when compared to family members.

So while the Schnee's all have the same semblance as each other, they are unique as a family as they are the only ones with a generation to generation semblance that is identical. In a world of special snowflakes, they found their own way to be a special snowflake.