There is only one Christian postion on this matter. However, some people claim the title Christian while holding non-Christian views. That's their right, but that doesn't entitle them to get everything they want without enough public support.
You could fit the numbers of American attenders of these denominations in a thimble. Within their tiny groups, the pro-homosexual lobby would fit inside an even smaller thimble.
Compared to the mass of current Christianity they are insignificant except that they speak the partyline that the media wants to promote.
Compared to the mass of historic Christianity they are swept aside and viewed as the heretics that they really are.
Folks like these are nothing but atheists with collars. These "clergy" are nothing but atheistic lapdogs.