Here's a list for that, though I'm relying on wikipedia for some things (like Angel being retconned with the All-Winners Squad) . . . it's not long, but any omissions / changes / other suggestions?
Invaders / All-Winners Squad / Liberty Legion :
Angel (Thomas Halloway)
Blazing Skull (Mark Todd)
Blonde Phantom (Louise Grant Mason)
Blue Diamond (Elton T. Morrow)
Bucky I / Winter Soldier (James Buchanan Barnes)
Bucky II (Fred Davis)
Captain America I (Steve Rogers)
Captain America II (William Naslund; had previously been Spirit of ’76)
Fin (Peter Noble)
Human Torch (Jim Hammond)
Jack Frost
Miss America (Madeline Joyce Frank)
Nia Noble
Patriot / Captain America III (Jeffrey Solomon "Jeff" Mace)
Red Raven
Silver Scorpion (Elizabeth Barstow)
Spitfire (Lady Jacqueline Falsworth Crichton)
Sub-Mariner (Namor)
Tara
Thin Man (Bruce Dickson)
Toro (Thomas Raymond)
U.S. Agent (John Walker; had also been Captain America)
Union Jack I (Montgomery Falsworth)
Union Jack II (Brian Falsworth; had also been The Destroyer)
Union Jack III (Joseph Chapman)
Vision (Aarkus)
Whizzer (Robert Frank)