When Kelsey Grammar started saying that he is a Republican, he couldn't trip over himself fast enough to say that he was still liberal on social issues. Same with Bo Derek.
Do you have quotes on abortion from any of the folks you list?
No, but I remember them getting interviewed , and like you said, made SURE to emphasize their social liberalism. My ears perk up when I hear someone in show biz say they are not liberal. So I pay attnetion to what they say next. Jack Nicholson, when he got his GF pregnant was asked about abortion. He said, I respect other views, I’m just against it.
Another interesting guy was Bob Crane. He was super conservative on God, country,guns,patriotism, and would often take good natured abuse from his Hogan’s Heroes co-stars about it. They were all liberals. But his son was interviewed and said his dad was “very liberal about abortion”. Not surprising.