Those are all lawsuits based upon public accomodation laws. Churches are exempt from public accomodation laws. Any lawsuits against a church would therefore be dismissed at the first hearing. But yes- there would be idiots who would attempt such a lawsuit. Any idiot can file a lawsuit, just like any idiot can claim that it is still illegal for gay couples to marry in California.
But isn't a church simply a congregation of christians? How is it more or less than that? And if christians have been successfully forced to promote gay-lifestyle "marriages" in violation of their core faith values, how is it again that this would legally protect a congregation of them?
Do you think that if you are a Christian you are exempt from taxes?