One important thing to know is that all image stabilization correct for pitch ad yaw. Which is done by either move the image sensor or a lens element in X- and Y-direction
That is the basics of all systems (2-axis or more).
3-axis systems add compensation and motion sensor for roll.
5-axis system also compensation and motion sensor for X- and Y-motion.
The only difference between pitch/yaw and X/Y motion is the type of motion sensor used, but the image sensor or lens element move in X/Y direction for both. The projected image is moving in X/Y direction for both of them. Tilting the sensor do not help for correction yaw/pitch unless the lens also tilt the same amount. But this will not work as a lens may be too heavy and would risk serious damage on the one holding the camera.