Several religious groups believe in or allow polygamy, including Muslims, some Hindus, and some Christians. Anciently (in Biblical times) Jews commonly practiced polygamy as well.
Christian men do not have many wives and do not believe in polygamy. Only a small sect of Mormans engages in polygamy.
The U.S. Constitution does not restrict the practice of polygamy. However, it does not explicitly or implicitly protect that right, which allows state and national legislatures to restrict it.--Polygamy is not mentioned in the constitution or in any of its amendments; the only prominent sect in the US that practiced polygamy (the Latter Day Saints) was established decades after the constitution was ratified. Polygamy is, however, against federal law.
Predestination is usually associated with John Calvin, the founder of the Presbyterian church. Please note that Presbyterians should not be called a sect but a church. A sect has negative connotations, saying the the group's believes are non-standard in some respects, and Presbyterians are very orthodox (standard) in their beliefs.
Islam is probably the largest religious group in the US that practices polygamy, although most Muslims are not polygamist.
In the Philippines, a Christian sect called Iglesia ni Cristo ( Church of Christ) believes that Jesus is a man. Other Christian denominations, in my opinion, give Jesus divine attributes.
There is no orthodox sect of Islam that believes that God is a corporeal entity.
The Sunnis are a sect of Islam that believe that the caliph may be anyone who believes in the Islamic religion.
None of the mainstream Christian denominations allow polygamy, especially in countries where it is illegal. There are several offshoot cults and churches which allow polygamy, but these are usually individual small churches (<1000 people) that cannot be considered denominations. There are some individuals, religious and not religious, who practice polygamy individually as well.
Olive
Ex-Amish
The Christian concept of messiah does not exist in Judaism, regardless of Jewish sect. No Jew believes that Jesus was a moshiach.
They are called a sect.