Topic: Discovering which controllers are supported in each game?

I have many Wii U games.

I've noticed that, regarding multiplayer, they all have different controller requirements.

Some support some controllers, some only support others. Some need specific controllers.

What's the best way to discover which controller methods are available for each game?

@kingmustard if you have a retail game then it just shows on the back of the box. When viewing a game on the eShop, compatible controllers are also explained and it also says which ones can be used in the manual. (Home button while playing the game and choose manual)