Forward offers a very insightful and thoughtful article on non-Jews serving on a synagogue board. So what might you ask? To jump to the end of the article for a moment, a non-Jew at the center of the article reflected on his first board meeting where a discussion as to whether the synagogue was "haimish" had him looking through his Yiddish dictionary to understand what indeed was the focus of the conversation. Hamish according to a number of sources I googled means "home".
Why do I start with the idea of home and boards? Well, many people who do not have the lived experience or professional board experience or even technical knowledge but have never served on a board often report their initial discomfort being on a nonprofit board. Some of this is about relationships - that is not having any with those already at the table. Some of this is about protocols and experience - not knowing them or having them explained. And some if not a lot of discomfort is about culture. Yes, culture or the norms practiced by those in the "know" seated at the board table when newbies join can often alienate the newbies because the norms - that which is practiced and expected but not necessarily in writing - are unknown.
The Forward article principally focuses on how non-Jews who are practicing the spirituality are being welcomed onto Synagogue boards to add to and round-out the leadership needs. This is a good practice in general. But, caution flags must be raised for not just these but all boards where not all is shared or obvious while those with good intention are being asked to serve. Orientation and ongoing training matter greatly AND work to build relationships plays an equally important role.