Controller Button Rebinding (without keymapping touch)

Is it possible to rebind controller buttons for already supported games? Example: In RL sideswipe the controller buttons are already supported but I just want to rebind to different buttons (change boost button from B to RB). iPhone have this feature built-in. https://i.imgur.com/nNmcNJJ.png

I also tried Mantis and Octopus and none offer this. They all offer keymapping controller buttons to touch inputs. I don't want this. I just want to rebind buttons for already controller supported games.