i really like a comp without a duelist, i cant say it would works in ranked game, but in a pro play or tournament, this could be good
astra - her abilities are absolutely useful to delay or just to combo it with any agent. but im aware, its not the best for solo controller
omen - the flash its so powerful, making it a second controller with astra, and his oneway smoke is also pretty OP i would say, holding A short or b main with the floating smokes could be good.
chamber - chamber works as a 'duelist' or just a ego peekers out there while still have a trap
kayo - definitely S tier agent on Ascent, literally every of his ability is very good, molly for delay, flash for setup your team mate or just for himself, and ofc the knife and ult.
fade - another must pick agent for me.