Hi GC, what about Wildroots in North Carolina?
And have you checked the following?
This place looks interesting: http://www.wwoofusa.org/Farms/Details?UserId=426b4147-693e-4f6a-b815-82f952651ef6
Scroll down to "Spirits Rising" for more info here:
In general, how about working/interning/volunteering somewhere and meeting like-minded folks?
It sounds like you are wanting to skip the Rewild Camp style process of forming a group, and jump right into an existing group, right?
And just as another idea, looks like the Republic of Lakotah is also accepting applications. Maybe not a HG culture now, but could be potential:
Let us know what else you find.