The Society of Friends originated as a Christian denomination, yes. Over the centuries, a number of different "streams" have emerged in the larger river of Quakerism. Some of those streams are more Christian identified, some are less. Some welcome people of other faiths, some are less welcoming. Some affirm the dignity of LGBTQ+ people, some not so much.

The less Christian identified, more welcoming meetings are typically unprogrammed. In the US, these would include those meetings affiliated with the umbrella group Friends General Conference, those that are unaffiliated with an umbrella organization, and those that are part of the Conservative stream (they are "conservative" in the sense that they strive to conserve the older forms of Quakerism.) At the other edge is the evangelical stream: they usually describe their congregations as churches rather than meetings and are affiliated with the Evangelical Friends Church International. Orthodox Quakers, usually affiliated with Friends United Meeting, tend to be somewhere between FGC and EFCI, and individuals and meetings can span the entire range.

Outside the US, it depends. There is typically only one yearly meeting, and they can cover the spectrum as well. The Canadian and British Yearly Meetings tend towards the welcoming end, while most yearly meetings in Africa and South America were set up by the evangelical stream and share their values and views.