Actually, this isn’t the worst idea. It can be hard to tell what kind of input device the player’s using, especially on PC. Are you using kb+m, xbox controller, psx controller, generic bargain bin controller, etc? Also you can’t just assume that because a controller’s connected the player is going to use it (and lots of games do… much to my dismay since they make me go disconnect the controller). Once the player presses at least one button you can tailor all the inputs to that thing.
If you click on the graph, it’ll turn into a data table showing ~48 hours worth of information. Is that what you’re looking for?