ascendent

position or state of being dominant or in control

• “that idea was in the ascendant”

someone from whom you are descended (but usually more remote than a grandparent)

tending or directed upward

• “rooted and ascendant strength like that of foliage” John Ruskin

most powerful or important or influential

• “the economically ascendant class”
• “D-day is considered the dominating event of the war in Europe”