The content named as 'story', in GN4 can be either:

•An uploaded contributor's story

•A wire text

•An archived article

All of above types are, technically speaking, exactly the same, and there's no way to distinguish them one of each other, except perhaps by the folder where they are stored - as you will probably keep all wire stories under the same root, typically named Wires, while archived stories will be under the root Archive.