In some of the videos it looked like the blue spiral was trailing the white spiral as it moved. Different perspectives perhaps.
However, if it was sunlight causing part of the effect - the sunlight would hit the higher part of the blue spiral first and as the sun rose the blue spiral would become illuminated more towards the ground. Making it look like the blue “light” was starting at the white spiral and going downwards.
I just looked at three videos, and they all look as though this occurred at night. Where would the sunlight have been coming from? Atmospheric refraction?