thanks. I'll do a deep dive on it this weekend. (going into the slow season now so I have nothing but time)FYI, I found and fixed the source of this particular creaking noise. While checking the passenger door panel, I noticed the front door edge weather stripping was bunched up on top and folded over itself. I think this caused the weather strip to rub on quarter panel over bumps and when turning.
Here is a picture after I fixed it. Hard to describe, but imagine the top section being too high and scrunched up. I fixed this by removing the weather strip all the way down door, then refit starting from top so there was no more slack.
View attachment 802748