The following are non-pejorative sociological terms to describe religious movements:
SECT: a deviant religious organization with traditional beliefs and practices.
CULT: a deviant religious organization with novel beliefs and practices.
Sorry, left out the first term. Here’s the whole list.
CHURCH: a conventional religious organization
SECT: a deviant religious organization with traditional beliefs and practices.
CULT: a deviant religious organization with novel beliefs and practices.