"Side Curve" Orbs

The top two photos below show mysterious orbs I photographed on April 9, 2017. The bottom two photos show similar-looking mysterious orbs I photographed on previous days. The orbs all have curved stripes on their left or right sides.

This "side curve" pattern is the 20th recurring pattern I have noticed in mysterious orbs I have photographed. The visual below summarizes these 20 patterns, and shows how many times I have photographed each pattern. Many examples of these patterns can be seen in the post here.