Bisexual swap "homoswap" - is it even a thing?

Hey guys, my wife and I have been exploring for a long time. We are both bisexual and enjoy the fun of the same sex in the same room together. We have great sex together but we can't do for each other what a same sex partner can do. So we aren't looking for the traditional full swap MF and instead looking for MM FF. What would someone call this and is it even a thing?

I know it will take a long time to find this as its already hard to find a 4 way connection in couples so we are really throwing a wrench into it.

Just thought you all may be able to help us out!