Church Handbook lists sins for which disciplinary councils are required and possible.
General Handbook: Serving in The Church of Jesus Christ of Latter-day Saints (Salt Lake City, UT: The Church of Jesus Christ of Latter-day Saints, 2021), accessed June 13, 2022.
Membership Council May Be Necessary (see 32.6.2)
Adultery, fornication, and same-sex relations
Cohabitation, civil unions and partnerships, and same-sex marriage
Intensive or compulsive use of pornography that has caused significant harm to a member’s marriage or family
Sins That Require Holding a Membership Council:
Incest
Child pornography
Plural marriage
Sexual predatory behavior