Any interest in smaller universities? Tufts is an obvious choice for IR people, also on the other list. Brown is on both lists. William & Mary too–obviously in Virginia, but it very much has a similar vibe to those sorts of Northeastern schools. Also has a cool joint degree program with St Andrews, and one of the majors in that program is IR (St Andrews is also well-known in IR):
Of course if universities are out, that is fine too. Since you mentioned PA, I think that would put Swarthmore into play. I believe it is again considered very LGBTQ friendly as well.