The IXV is more similar to the SNC Dream Chaser than any of what SpaceX is doing. Though you cannot compare them either, apart from that they are both spaceship

The IXV is more similar to the SNC Dream Chaser than any of what SpaceX is doing. Though you cannot compare them either, apart from that they are both spaceships, utilize the lifting body concept, and have (at different levels) autonomous control.