You searched for: “ascendant”
ascendant, ascendent (s) (noun); ascendants, ascendents (pl)
That which is has become more powerful or gained more power: "The governor's popularity is still in the ascendant."
ascendant, ascendent (adjective); more ascendant, more ascendent; most ascendant, most ascendent
Being more powerful or gaining more power: "The senator's popularity is no longer in the ascendant category."