Play Nintendo Switch Online Games - How Much Users?

I created 3 users on my Nintendo Switch once I (user A) then my mother and sister user B&C. Now my question. If I buy a game in the online store, I can play it with all three users or only with the person who bought the game. With Nintendo Switch online, only the user who bought the service has this service and not the entire Switch.

Games can be played by everyone, even everyone has their own game progress.

Games and DLCs can be used by all users on the device.