OK, I just took lunch and went out of my way to drive on a very smooth newly paved hwy so I could listen and feel without the usual bumps of a worn road. The main thing I discovered is that the issue increases over time, so I would guess that something gets warm or warmer through friction over time and becomes more pronounced. It was barely noticeable at first, but after being on the road for 10-15 minutes it increased noticeably. I would also now describe this as not only a vibration, but a mild grinding or rubbing. I couldn't really hear any grinding but I could feel a definite rubbing or grinding through the steering wheel especially when curving to the right along with the vibration. Not continuously, but intermittently and rythmic like with every rotation of the tire in the same place. On a really nice long curve to the right I braked aggresively and the vibration was significantly more pronounced.
Does this help anyone to see more clearly what I'm dealing with?