I searched it and the answer I got definitely suggests there must be 1000s of siggys at least.

The name Siggy is a girl's name meaning "victory; violet". Siggy can be a short form of any name that starts with Sig-. Most Sig- names have Germanic origins, like the Scandinavian names Signe and Sigrid. In this context, Siggy means "victory".

Now someone is going to create accounts for Siggy's 1-46.