Hello! What you've found are ....likely to be RMT.
I use the word likely because with Square Enix, people are considered innocent until proven guilty.

What you cannot do is claim someone is cheating, and post their name here. That's claiming their guilty before an investigation is completed; which isn't allowed.
You cannot put a considered-innocent player on blast by posting their pictures, not matter how increasingly evident it is that they may in fact be breaking a rule.

Please remove the pictures from your post, and then as Dynratygus suggested, use the support desk option ingame and report RMT. I only ask you to do this because countless others have gotten in trouble for doing this. I don't want to see anyone get in trouble when they only have good intentions.
You can also contact the Special Task Force directly via This link in regards to RMT reports if it's easier for you.