Who among the following is not a legal guardian of a Muslim minor's property merely by the stated…

The "Brother, without a testamentary or court appointment" has no authority over the minor's property merely because of the relationship. The recognised legal guardians of property are the "Father", the "Executor appointed by the father's will", the "Paternal grandfather" and the executor appointed by the grandfather's will; a brother may act only under a valid testamentary or court appointment.