[EDIT: Just a little something to run with, so that more than just a few folks here have fun with this thread!] Oddly, the equivalent Fawcett team would likely be the easiest to establish, since that company had at least three existing smaller teams from which to cherry pick, mix and match per the needs of each story: the Marvel Family, the three Lieutenants Marvel, and the Crime Crusaders Club. Add in Spy Smasher, Radar the International Policeman, and any lesser lights from the earlier Fawcett roster, and there you go!