Amidst of all of November's brouhaha over new lodges, breakaways, and a new "Grand Orient," it is only fair to point out that there are over 315 grand lodges regarded as irregular, unrecognized, clandestine by the mainstream currently working in the US right now. The new group has generated lots of press. Others don't, but they still exist (including here in Indiana — my Hoosier brethren will be shocked to discover) unknown to almost all of us.
The indefatigable Paul M. Bessel has undertaken the incredible job of attempting to list them. Have a look at http://bessel.org/glsusa.htm