You have mentioned the controller works well with other games, correct? If so, a few things I would look into:
If Steam recognizes the controller you are off to a good start. You can test functionality is working from a site like https://hardwaretester.com/gamepad
In Heroic Games, you can click on your Dead Rising 2 in the library, from here you click on the dots (or the 3 bars, unable to verify as I am not at my home machine) at the top right and can go into 'Game Properties' to rename the game as TachyonTele mentioned. You will also see that on this menu there is a quick way to add the game to Steam. After you fix the name, try adding it this way. Try launching the game from Steam, then go into settings -> keyboard/controller and try to default the config and see if this resolves the troubles!