Well the simplest examples are Sean Hannity, Rush Limbaugh, Tucker Carlson, Fox News etc.

With a few notable exceptions Republicans who have criticized Trump have been primaried or forced out of the party. I should say that as a resident of Massachusetts I was very impressed by Romney as governor. I disagreed with him on some policy issues, but saw that he was very intelligent and a skilled administrator.

Due to my education and diverse work experiences my most important issue is climate change. I have read numerous books, listened to podcasts, and explored many perspectives. I think it is wonderful to have a robust policy discussion about what mechanisms would be most effective to respond to climate change. Denying the extent of the threat doesn't seem to be a viable option. There have been no significant scientific advances in the understanding of the basic structure of climate change since the 1970s. Now we have to do the hard work of responding. As some people have said the laws of physics don't care about what is politically possible.

I'm not sure if this answers your question. People who occupy different media landscapes develop strikingly different perceptions of reality. Since my training is as a historian and educator, I am very experienced at understanding change over time. I have had to unlearn ideas and prejudices that I grew up with. It hasn't always been easy, but sometimes new information changes our worldview.

As a final note, I did see many Liberal or Center Left figures and periodicals praising Trump's breakthroughs on Middle East peace. The problem is in a world view clash or culture war, nobody wants to be seen as weak. That keeps us locked in limiting narratives that blinds us to reality. I am hoping that there will be new opportunities for dialogue, but I am also realistic about the many challenges we are facing.