-Islamic Republic of Afghanistan-Islamic Republic of Iran-Islamic Republic of Mauritania-Islamic Republic of Pakistan
If you mean Muslim ruler, then is called Sultan, Amir, king, or president. If you mean Muslim religious leader, then is called Imam, sheikh, or Amir
I think the answer is Sultans
If it is for justice yes
80-85% Sunni Muslims 10% Shi'ite Muslims 5-10% Other Muslims the figures may vary a bit. but these are pretty close to actual figures