Sonja mentions:

growing up in co-housing: https://www.cotaticohousing.org/

Paramhansa Yogananda:  https://www.yogananda-srf.org/

Goenka Vipassana meditation and retreats: https://www.dhamma.org/en-US/index

and Auroville, India:  https://auroville.org/

Elisa mentions:  Maitreya  https://www.share-international.org/

and

Benjamin Creme: https://www.share-international.org/background/bcreme/bc_main.htm