Historic Member Communions
- African Methodist Episcopal Church
- African Methodist Episcopal Zion Church
- Alliance of Baptists
- American Baptist Churches USA
- Armenian Church of America (including Diocese of California)
- Christian Church (Disciples of Christ)
- Christian Methodist Episcopal Church
- Church of the Brethren
- Community of Christ
- The Coptic Orthodox Church in North America
- Ecumenical Catholic Communion
- The Episcopal Church
- Evangelical Lutheran Church in America
- Friends United Meeting
- Greek Orthodox Archdiocese of America
- Hungarian Reformed Church in America
- International Council of Community Churches
- Korean Presbyterian Church in America
- Malankara Orthodox Syrian Church
- Mar Thoma Church
- Moravian Church in America
- National Baptist Convention of America
- National Baptist Convention, U.S.A., Inc.
- National Missionary Baptist Convention of America
- Orthodox Church in America
- Patriarchal Parishes of the Russian Orthodox Church in the U.S.A.
- Philadelphia Yearly Meeting of the Religious Society of Friends
- Polish National Catholic Church of America
- Presbyterian Church (USA)
- Progressive National Baptist Convention, Inc.
- Reformed Church in America
- Serbian Orthodox Church in the U.S.A. and Canada
- The Swedenborgian Church
- Syrian Orthodox Church of Antioch
- Ukrainian Orthodox Church in America
- United Church of Christ
- The United Methodist Church