There are definitely regional groups of sov cits. They aren't necessarily organized groups, but the scams are typically perpetrated by "gurus" who sell documents and things to their believers, which resulted in certain regional twists on sov cit rhetoric.

This legal opinion documents a number of the gurus in Canada and their lines of argument.

https://www.canlii.org/en/ab/abqb/doc/2012/2012abqb571/2012abqb571.html