Selecting godparents for your children is a very personal decision. A married couple and a single person can be chosen as godparents. The terms will need to be defined as to what role each plays in the event the parent passes away.
Usually the young person's godparents.
There is no requirement to invite any single person to a wedding except the bride, the groom and the officiating authority. However, there are strong social expectations that certain people will be invited (parents of the wedding couple, etc.). Whether or not the godparents would expect to be invited depends mostly on how involved the godparents were in the person's life. If the godparents were like second parents (spent a lot of time with the child, babysat, took them to events, was present at major events like graduations, etc.) then it would be quite insulting to not invite them. However, if the godparents were present for the ceremony but otherwise not involved in the child's life, then it is socially acceptable in most circles to not invite the godparents. There may be some negative reaction from others involved in planning the wedding - parents, most likely, who expect their child to honor the absentee godparents.
A married couple in most states.
"Mongamy" is basically three person's, one couple, married, and a third person having sex. R&R
Godparents are there simply to reinforce the teachings of the parents and their promise to bring up the child in the way of Christ. The godparents are like teachers, supporting the parents in what they do, but the real task of bringing children to Christ rests with the parents.
A godparent is just a person appointed to take care of children if something were to happen to the parents. So in that sense Jews do have godparents but there is no specific tradition of a godparent in judaism (and they don't call it that).
the person with the lowest score
Yes, the couple would still be legally married because the divorce is not finalized.
Chris Martin of Coldplay married Gweneth Paltrow in 2003, although the couple separated in 2014.
The role of the godparent is to assist the parents in bringing up their children in the practice of the Catholic Faith. Therefore to be eligible to be a "godparent" it is necessary that the person be a practicing catholic. A Protestant may be a "Christian Witness" but may not serve in the capacity of godparent in the Baptism ceremony. There must be at least one person who serves as a godparent.
As a married couple if you meet and Amish person and want to become Amish you can. There is nothing in the Amish lifestyles that prevents people to converting to the Amish lifestyle.
The opposite would be an adult or grown person.