"can we just call them cake spheres?"

Never ever ever watch Food Network when you are hungry. It's a truly terrible combination.
You end up calling your best friend, in my case the wonderful Mr. W, and forcing him to make something Cake Balls.
A destroyed sheet cake+icing+chocolate coating. Nothing in my life had ever looked so appetizing.Here is the link to the original recipe!
And they were fun and easy to make, so I see a lot of Cake Balls in my future.