Okay so I'm changing Eeterna from a kwami to an essent, who was formed immediately after the Alpha kwamis divided. Eeterna, alongside Diium, are the essents of Time and Elements, and are a result of the merging neutral energies from the Alpha kwamis. Like the essents before the Alphas they were unstable beings, and eventually divided into the kwamis now known as the Timekeepers and Elementals.
Each one is the descendant of the energy of two Alpha kwamis that are not opposites, making these kwamis more powerful than Deltas, and also stemming from two "parent" concepts. It was the division of Eeterna and Diium that eventually lead Alpha kwamis to learn to fragment their own auras, which resulted in the formation of the Delta kwamis.
Light was born from Order and Space Darkness was born from Chaos and Void Fire was born from Life and Destruction Water was born from Death and Creation Magic was born from Creation and Chaos Gravity was born from Destruction and Order Weather was born from Destruction and Void Aether was born from Creation and Space Glaciation was born from Death and Void Electricity was born from Life and Space Earth was born from Creation and Order Air was born from Destruction and Chaos Reversion was born from Destruction and Space Intuition was born from Creation and Void Patience was born from Order and Life Progression was born from Chaos and Death Stagnation was born from Order and Void Change was born from Chaos and Space Opportunity was born from Death and Destruction Lineage was born from Life and Creation Evolution was born from Life and Void Preservation was born from Death and Space Destiny was born from Life and Chaos History was born from Death and Order