Static classes besides ContentManager, GraphicsDevice, SpriteBatch, GameTime, Random?

1

Creating Class_Applications and figuring out how to make these classes static definitely changed my programming for the easier. What other major classes do you think should be added to this list?

2

What is the purpose of this? I’m not sure what you’re trying to achieve.

3

I can do this:
public void Function_Draw_Something()
{
Class_Applications.SpriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend, null, null, null, null, class_Video.class_Video_Viewports_List[class_Video.Video_Viewports_Drawing_Which_Viewport].Video_Viewport_Transformation);
}

Instead of:
public void Function_Draw_Something(SpriteBatch spriteBatch)
{
spriteBatch.Begin();
}