Christianity does not have schools of jurisprudences. However in the past the Catholic Church has had opinions on how to govern and in the future "dominionist" sects of protestantism may gain influence [0].
In Germany both the Catholic church and the Evangelical church are registered religious organisations governing various religious communities and institutions. The German Catholic church is obviously subject to the Vatican, but the Evangelical church is a lot more democratic, consisting of a large number of otherwise independent religious communities (including Lutherans, Calvinists and Unionists).
This sounds similar though a lot more aggressively expansionist.
This sounds similar though a lot more aggressively expansionist.