I theorize you can too theorize their political leanings from the diversity of their performances. Do they have a wide range of characters, where they can observe other people, take feedback, and present something that feels natural each time? I bet that diversity is rooted in a significant amount of empathy to understand other groups. Our do they play the same tough guy over and over, rigidly, as they project their ideal image? Probably gonna be someone that expects conformity and conservation of the status quo.

It’s obviously not a strict rule. De Niro, Eastwood, Pesci, and Wayne all played tough guys, but the second two only play tough guys.