Please explain why any of those images could not be of the earth! A globe is a 3D object, the way it looks depends on the orientation and the distance we are from the globe. These are of North America from 2 altitudes - quite different.
Different cameras, different exposures and different processing can explain a lot of the difference. In fact I doubt the "Blue Marble" is quite as colourful as those! It might be more like the unadorned picture on the right - npt quite as pretty as NASA's!
Why on Earth would the size of North America in relation to the globe change due to altitude? If anything the higher you get the "globe" gets smaller in proportion.
2012 and 2002 obviously stand out as an obvious representation of the disparity of the represented size. But oh well, let's take Blue Moon's advice and just ignore all the previous ones and finally trust the 2015 version, you know the one taken from the mystical Earth-Sun L1 sweet spot in Gravity, a million miles away, with the uncanny ability to perfectly face Earth from that distance, when I can't even get a particular star to stay in my telescope if I fidget in the slightest.
Now, I have no idea which images might be genuine. I have no reason to think any are actually "fake", but almost certainly thet have been copied, reduced, "enhanced" and some might be composites.
Wow. That's a high standard of proof you have there when looking at a photo. It may have been copied, reduced, "enhanced" a composite etc... but it can still be an accurate representation of reality. Way to bend the rules to keep your fragile dependency on trusting NASA intact.
But as I stated at length, only an idiot would ever suspect that your "earth setting" picture could ever be though "original". It is obviously a composite, and you were using a low resolution copy anyway, so we know it is a much reduced composite - what more has you fancy forensics told us?
It doesn't matter if it's a low resolution copy, all the artifacts would match evenly when you adjust the curves, unless of course it is an obvious composite from two different source images. Take it from me, an experienced graphic artist that understands JPEG compression.
And trust there are plenty of idiots that believe these composites to be real. I suspect I'm talking to many of them daily here, you obviously just admitted that much when you said an altered, enhanced, copied composite image of Earth fits the definition of "real" in your mind.