If I were to rank them...
Sara Lance - the clear winner
Mick Rory - my vote
John Constantine
Nate - would be ranked higher had he not become a joke
ZarI
Ava
Just to point out, if other any of the other members were listed, Behrad would be between Zari and Ava, and OG Legends like Ray Palmer, Rip Hunter, etc. would definitely be ranked higher.