The Ryu has survived to this day with no rank or gradings. However, holding grades or rank in other forms of martial arts are beneficial if one wishes to become a member.
The ryu is listed of having Shihan as a teacher and leader. The word Soke adopted from Kabuki has never been used. Bugei Ryūha Jiten lists the following as previous Shihan including the founder. Needless to say the ryu is not hereditary either.