“Many Republican leaders in California were what we now call RINOs.”
You left off one of the worst of the breed, Thomas Kuchel, who was a US Senator from California in the 1960s.
In the 1962 election for California governor Kuchel refused to endorse GOP candidate Richard Nixon.
In the 1964 Presidential election Kuchel not only refused to support GOP candidate Barry Goldwater, Kuchel openly endorsed Lyndon Johnson.
When Ronald Reagan ran for Governor in 1966, Kuchel had this to say about Reagan’s conservative supporters:
“A fanatical neo-fascist political cult of right-wingers in the GOP, driven by a strange mixture of corrosive hatred and sickening fear that is recklessly determined to control our party or destroy it!”
I originally included Kuchel in the draft version of my post, but I decided to limit it to governors. Indeed, Kuchel was a pill. The Republicans finally ousted him in the 1968 primary, but although Max Rafferty, who beat Kuchel, was an excellent candidate, he narrowly lost to Democrat Alan Cranston.