I used to converse regularly with a Polish National Catholic bishop here who was very much in awe of Blessed John Paul the Great and even attended ecumenical sessions in Rome during that Holy Father’s Pontificate.
There was even a PNCC parish here that came into union with Rome but I don’t know much about it.
The Polish National Catholic Church believes that the Word of God is the seventh sacrament, honours Savonarola, John Hus and Peter Waldo in their calendar, makes clerical celibacy optional and offers Communion in both Kinds, as well as some other very minor differences.
There is no reason why they could not have a kind of “Ordinariate” of their own, should they wish to be in full union with Rome as they are Catholic in every other which way.
I hope and pray that a reconciliation with the PNCC will occur soon!
We should invoke Blessed Pope John the Great for this!
Alex