>>149489499It really depends on the type of Quaker as well as that Quaker's personal beliefs. I'm a Quaker and while I and most of my meeting wouldn't typically qualify for what most would consider Christian, my wife probably would with some caveats.
While my meeting aren't, there are the orthodox, plain and conservative Quakers which would absolutely be considered Christian. They tend to have programmed meetings (IE things are structured, with a pastor doing a sermon and singing of hymns) and almost exclusively preach from biblical scripture, if not completely with no non-Christian input.
My meeting is unprogrammed (IE we do what is called "waiting worship" where we sit in silence, waiting for that of God/the unknowable within AKA the inner/inward light to guide us to speak). There's no clergy, no sermon, no crede, no hymns, just quiet contemplation.
But besides these two flavours of Friends, there are many, many, many other ways to be Quaker and trying to paint all of us and all of our beliefs with one wide stroke of a brush would fail to capture the truth of how diverse we all are.