@crackwitz I updated my question to indicate that I indeed consider that BGR quirk of OpenCV.
I’m getting the data array from the Mat object and using matplotlib.pyplot.imshow routine to display the image. That’s how I’m seeing the order as switched.
Like I say in my updated question, what’s intriguing to me is how the OpenCV behavior is inconsistent between BayerRG->RGB and YUYV->RGB conversions.