Oct 17, 2020 Lynn Englund of the Twin Cities Cohousing Network presented on
Housing Density- in Cohousing and in neighborhoods.
These were her references:

Fellowship for Intentional Communities Directory. 
U.S. Cohousing communities arranged by state
http://www.ic.org/directory/intentional-communities-by-country/

Stone Curves Cohousing. Tucson, AZ: http://www.stonecurves.org/

Fresno Cohousing. Fresno, CA:  http://www.fresnocohousing.org/

Arboretum Cohousing, Madison WI: https://arboretumcohousing-org.cftvgy.org/wordpress/

Jackson Place Cohousing. Seattle, WA. https://seattlecohousing.org/

Cornerstone Village Cohousing. Cambridge, MA: http://www.cornerstonecohousing.org/

Eastern Village Cohousing. Silver Springs, MD: https://easternvillage.org/

Capitol Hill Urban Cohousing. Seattle, WA: https://capitolhillurbancohousing.org/

Metropolitan Design Center Density Scale examples (Minneapolis)
https://designforhealth.net/wp-content/uploads/2012/12/MCHI_density_scale_MDC.pdf

Minneapolis Built Form Proposed Zoning Code Text Amendment:
https://lims.minneapolismn.gov/download/Agenda/1088/Built%20Form.pdf/47992/1921/Built%20Form

Minneapolis 2040. Comprehensive Plan
www.minneapolis2040.com

Draft of Corridor 4 District handout
https://minneapolis2040.com/media/1584/pdf-district-handout_corridor-4.pdf