I've been searching for years and visited many communities. Where there is permanent settlement, there is constant drama and exploitation of humans and Nature. The only times in my life that have been truly harmonious have been when I'm off grid, living in, or out of, a vehicle that carries everything I need to meet my own needs directly and sustainably. I had and to some degree still have a dream of forming an organization called Prototribal that links up green, free, nomads so they can form little mobile tribes. Since everyone will be mobile and independent, the typical things that cause disharmonious conditions in settled communities can be avoided. Tribes can form and reform at will, allowing everyone to be free but also to have community.
Feralculture.com is probably the closest thing to settlements that have the potential for freedom and harmony right now.