Well, on the bump-touching issue (since you bought it up Samcro) and the “every photo counts” philosophy that I think Meghan absolutely subscribes to, her arrival at Eugenie’s wedding is a good example of the “unnatural gesture that comes over nicely in a still photo” that she often did (coat-flicking and bump-clasping being amongst them).
At the wedding, the photos and film footage show that from the moment she started to exit the car, until she walked to the start of the awning to greet the clergy, Meghan had her left hand raised to delicately cup her jawline. It was only a walk of a few metres, but it is not a remotely natural gesture. But it does result in a lovely photo, where her face is nicely framed by her hand. As I said in an earlier post, she obviously knows what looks good on camera, and made sure she delivered it.