The "Slanted C" Orb Pattern Keeps Recurring

The photo on the left shows a mysterious orb I photographed at Grand Central Terminal in New York on February 27, 2017, which looks like the similar orb on the right I photographed a month earlier.

This is the 12th time I have photographed a mysterious orb with a stripe that looked like the character "C" slanted over to the right. Below are ten other examples.

Below is my revised table of repeating patterns in mysterious orbs (most of the examples referred to below can be conveniently seen in this post).

Description	Occurrences	Comments	URL
Inverted Y	7	Rather like the lower case lambda character, part of the Greek alphabet	http://orbpro.blogspot.com/2016/11/the-seventh-photo-ive-taken-of.html
Umbilical cord ( AKA "cul-de-sac")	10	Resembles an umbilical cord with a curved loop. Is it a symbol of motherhood?	http://orbpro.blogspot.com/2016/11/the-10th-appearance-of-this-orb-motif.html
Curved stripe at top or bottom	9	May be on top or bottom of orb	http://orbpro.blogspot.com/2017/01/high-enigma-of-striped-orb.html http://orbpro.blogspot.com/2016/07/more-striped-orbs_18.html  http://orbpro.blogspot.com/2017/02/the-9th-time-ive-seen-this-orb-pattern.html
Diagonal stripe	14	Goes from one side of orb to another, diagonally. Looks like a slash (not a backslash)	http://orbpro.blogspot.com/2017/02/the-14th-mysterious-orb-with-diagonal.html
Short diagonal stripe	5	Goes from top right corner toward center	http://orbpro.blogspot.com/2016/11/the-5th-sky-orb-ive-photographed-with.html
Hose and circle	9	Looks like a ball that has fallen out of a tube	http://orbpro.blogspot.com/2017/02/the-9th-time-ive-photographed-this.html
Slanted C	12	Looks like a C shape, tilted over quite a bit to the right	This post
Inverted V	4	Looks rather like the caret character (an inverted V)	http://orbpro.blogspot.com/2017/02/another-inverted-v-orb.html
Hook-like stripe	4	Has a kind of candy-cane shape	http://orbpro.blogspot.com/2016/07/another-orb-with-hook-like-stripe.html http://orbpro.blogspot.com/2016/11/strange-stripes-on-mysterious-orb.html  http://orbpro.blogspot.com/2016/07/blue-orbs-haunt-windows.html
Curvy 9 which fell down	2	Looks like a curvy nine which “fell down”	http://orbpro.blogspot.com/2016/07/two-striped-orbs-with-same-fingerprint.html
4 stripes	2	Straight lines intersecting in a particular shape	http://orbpro.blogspot.com/2016/07/the-same-strange-mark-on-two-striped.html
Broken squiggly T	3	One wiggly horizontal stripe at the top above a vertical stripe at the bottom	http://orbpro.blogspot.com/2016/07/reappearance-of-double-striped-orb.html
Hockey stick	2	A stripe with a shape resembling a hockey stick	http://orbpro.blogspot.com/2017/02/another-hockey-stick-sky-orb.html
Backslash	4	Goes from one side of orb to another, diagonally. Looks like a backslash (not a slash)	http://orbpro.blogspot.com/2017/02/night-of-backslash-sky-orbs.html
Belt-like	8	A stripe goes from the left side of the orb to the right side, horizontally.	http://orbpro.blogspot.com/2017/03/another-mysterious-orb-with-belt-like.html