Honestly, everyone associated with Amanda Waller and her Task Force X / Suicide Squad corner of the DCU.
Because I don't want Steve pulled by anything outside the Wonderverse franchise. Give him a different boss ... like a re-purposed Julia Kapatellis, who works for the UN, directing squads to emergency humanitarian disaster areas. Squads that Dr. Steve Trevor leads.Why not?
I think we have something hereI somewhat suggested this. Oddfellows aren't an espionage team anymore, they're superhuman hotzone crowd control and lifeguards. They have expertise in dealing with superhuman battlezone survival, and use medicine, triage, and magic to save lives.