I noticed that this topic was revived after mention of "vocal fry" (may have been incorrect diagnosis) on one of the BS threads regarding the voice of the Trump lawyer John Sauer during Supreme Court hearings. He sounds much older than the 51 years Wikipedia suggests. And RFK jr has as gravelly a burned-out voice as there is. Their voices aren't a simple matter of situational emphasis, it sounds entirely involuntary, so probably some other problem. (Looking up thread Alice mentions an NPR piece from 2011, and I think I also heard that and is my point of reference about the subject.)

I was also a long-time listener to the Diane Rehm show, and over the years she was diagnosed with spasmodic dysphonia, but that was more of swallowing or choking on words, not the assumed raspiness.