Regardless of the name or variation the common thread is Secular Humanism.   It is an a-theistic philosophy with policy and strategy to implement a New World Order independent of historical religious tenets.   

From a spiritual perspective each of the movements away from revelation knowledge of the Creator was inspired by the original rebel, Lucifer.   

Books, papers, societies, and succession planning have enabled the movement to sustain over centuries.   

However, the real tie that binds and energizes this thought and the movement is Satan himself along with his demoms.   

The spirit that binds the efforts is the real threat to humanity.   The human players are not really that important.