Celtic Catholic Church was created in 1974.
Celtic Orthodox Church was created in 1866.
I do know that the church to which I belong, St Mary's Catholic Church in Peru IL has both the standard Christian cross and the Celtic Cross on the roof of the church. The Christian cross extends high on the steeple and the Celtic cross is above the doors. This parish was formed and the present church built by immigrants wishing to establish an English speaking church as the others in town were either Polish or German. This is presently an endangered church.
Steilacoom Catholic Church was created in 1855.
Palmarian Catholic Church was created in 1975.
Ethiopian Catholic Church was created in 1930.
Catholic Mariavite Church was created in 1935.
Catholic Life Church was created in 1971.
Catholic Christian Church was created in 1977.
Nordic Catholic Church was created in 1999.
Christ Catholic Church was created in 1937.
Apostolic Catholic Church was created in 1992.
Ecumenical Catholic Church was created in 1987.