Farrakhan is not a Muslim according to most Muslims around the world. He is his own religion.
Like Sheite and Sunni, Farrakhan has created his own personal version of Islam which is different from the rest of the world. No Muslim group other than Farrakhan believes in Black supremacy and spaceships, etc.
In fact, very many radical Muslim groups would kill Farrakhan as quickly as they would any Jew, for being a heretic.