The letter X sure is confusing when it comes to video games. Here are some images I made while working on my latest YouTube video about Mega Man X (https://www.youtube.com/watch?v=Acyru-IYwrQ). The controller one is something I've seen before, but decided to remake it so the image would be consistent with one about the game titles that use "X". There are both still images and animations of each below.
(https://www.vgmaps.com/TMP/XDiagram.png)
(https://www.vgmaps.com/TMP/XDiagram-Animated.gif)
(https://www.vgmaps.com/TMP/XDiagram-ControllersOnly.png) (https://www.vgmaps.com/TMP/XDiagram-NamesOnly.png)
(https://www.vgmaps.com/TMP/XDiagram-ControllersOnly-Animated.gif) (https://www.vgmaps.com/TMP/XDiagram-NamesOnly-Animated.gif)