Heroes introduced in the 60s and 70s could make good Teams.

60s and 70s Decade would make great teams.

DC owns tons of heroes from several companies. The 30's and 40's having created the most original heroes. As you can see from the following lists, DC started to revise older heroes from the Golden age after the 60's and 70's rather than create new heroes.

Here are my ideas for teams based on what decade they were introduced:

1960s Heroes Team

Elongated Man

Captain Atom

Zatanna

Metamorpho

Animal Man

Batgirl

The Creeper

1970s Heroes Team

Black Orchid , Adventure Comics #428, 1973

Rose and Thorn, Superman’s Girlfriend, Lois Lane #105 1970

Black Lightning, Black Lightning #1  April 1977

Shade the Changing Man, Shade the Changing Man#1 1977

Mister Miracle, Mister Miracle #1 1971

Firestorm, Firestorm #1, 1978

After the 70's DC really didn't created too many new heroes. I will admit that there were heroes created, but non more memorable than the lists above.

1980s

Booster Gold

1990s

Static

Starman (Jack Knight)

2000s

Miss Martian