I flew a lot of taildragger light planes in the early 1950s: J3, J5, PA11, PA12, PA18, Tailorcraft, Aeronca Champion, and Cessna 140.
None of them had noticeable ground looping tendencies. In fact, it was something I never thought or worried about. The Cessna 195 (which I never flew) did have a reputation of being touchy on landing.
Despite the fact that their CGs were behind their wheels, I attribute the longitudinal stability on the runway of those planes to aerodynamic lateral resistance to rotation being greater than the turning moment caused by their modest weight being behind their CGs.
Kind Regards
P.S. found these comments interesting: https://www.supercub.org/forum/showthre ... In-Toe-out