I’ve always thought the Marvel title best representing the BA era was Marvel Team-Up. Usually teaming with Spider-man was a top tier character interspersed with relative unknowns. Story arcs were generally short and easy to follow. Not a great deal of experimentation involved with the title(one had to have been a Spidey fan), but always entertaining stories imo.
Avengers and DD hit high points in the 70’s and my personal fave being FF and the run up to #200 with good stories from Wein, Conway, Thomas, & Wolfman.