Bit of a loaded question but let me see if I can help. First off the first picture is what is referred to as a domestic discus, tank raised, and man made. The second grouping are wild discus. As in direct from the source of the amazon waters. That middle picture however is questionable. Could be a true wild, if so its amazing, could be some cross of some type?
Some may tell you the care for each is different, I am one who does not and I don't treat my wilds any different than my domestics.
A lot of times names and strain ID's are all a catchy selling point. If we call this blue moon starlight sapphire of the sun people are like *** thats amazing. If we say here is blue fish people are like blahhh. So as you can see a lot of it is marketing. Other times it gives a hint or a nod to the genes or background info, more for breeding purposes of what would match well. If they have x amount of bars or this gene or that.
At the end of the day, this is a very personal decision. Your best bet is to stay off google images as people can get super crafty with LED's and or Photoshop.
Look at the sponsor section here, you will see actual fish pics and tank pics. That will show you a true view. Go through Kenny's crazy monthly shipments. He follows them all up with actual eating and tank pics. Kenny you order as if it was a menu, what you see is what you get, almost as good as being there!