I still find that interesting. My distant cousin Susan Wyant had a Wyant that married a Wyant. And they were not related. I know that one line started out as Weygandt or Weygant before changing the spelling. I could put you in touch with her to see what her thoughts are on this. She may know a little more about some of the spelling changes.
They did that with some of my other lines as well. For instance Eltzroth to Elseroad(e) and even Helms was changed alot.Besides just dropping or adding the S. You never know what you might find.
Contact me at email@example.com
if you would like to contact my Wyant cousin.