Interesting. I've no idea.
Artists and signatures are a subject all to their own. I'm an ordinary artist who has painted because I enjoy it; had a couple of galleries. I've done things in early days like writing most of my name, back when I was doing mostly etchings, to, later on, hiding JC in the grass while not liking the intrusion of a signature.
This all reminds me of the time I was part of a landscape design firm, and I and another designer, both women, decided we wanted to change our very ordinary signatures, the boss's sig being exemplary, very strong.
That was a hilarious experiment, to us, at least.