Fictional elements similar to or like Bene Gesserit

The Bene Gesserit are a key social, religious, and political force in Frank Herbert's fictional Dune universe. Described as an exclusive sisterhood whose members train their bodies and minds through years of physical and mental conditioning to obtain superhuman powers and abilities that can seem magical to outsiders. Wikipedia

Multiple organizations of the Dune universe dominate the political, religious, and social arena of the fictional setting of Frank Herbert's Dune series of science fiction novels, and derivative works. Set tens of thousands of years in the future, the saga chronicles a civilization which has banned computers but has also developed advanced technology and mental and physical abilities through physical training, eugenics and the use of the drug melange. Wikipedia

List of secondary fictional characters from the Dune franchise created by Frank Herbert. Duke of House Atreides, and father to Paul Atreides. Wikipedia

Fictional character in the Dune universe created by Frank Herbert. Important role in the later installment Children of Dune . Wikipedia

Fictional character and member of House Corrino in the Dune universe created by Frank Herbert. Later featured in Dune Messiah (1969) and Children of Dune (1976). Wikipedia

Fictional character in the Dune universe created by Frank Herbert. Featured in the 1965 science fiction novel Dune by Frank Herbert, and is also a key character in the Prelude to Dune trilogy by Brian Herbert and Kevin J. Anderson. Wikipedia