Extreme
Extreme is an exclusive Super High IQ society open to those in the top 0.0031% (at least 160 iq sd 15, 164 iq sd 16) of the unselected adult population. Mensa accepts those who score in the top 2% of the unselected adult population or 1 in 50, you can think of Quasar Quorum as some kind of a hyper Mensa (I wouldn't use this name due to copyright) that accepts 1 in 31.560.
Octopus High IQ Society
Octopus is another other High IQ society by Petros Gkionis. It is open to those in the top 0.39% (at least 140iq sd 15, 142 iq sd 16) of the unselected adult population. Mensa accepts those who score in top 2% of the unselected adult population or 1 in 50, you can think of Octopus as some kind of a a more exclusive Mensa (I wouldn't use this name due to copyright) that accepts 1 in 261.
Ivory Tower Assembly High IQ Society
Ivory Tower Assembly is a High IQ society open to those in the top 2% (at least 130 iq sd 15, 132 iq sd 16) of the unselected adult population. It is the third High IQ society founded by Petros Gkionis.
Cosmic Cognition Coalition High IQ Society
Cosmic Cognition Coalition is a High IQ society open to those in the top 9.23% (at least 120 iq sd 15, 121 iq sd 16) of the unselected adult population. It is the fourth High IQ Society founded by Petros Gkionis.
You can find all High IQ Societies founded by Petros Gkionis here.