Mr. Noatak,
I always benefit from reading your posts; I hesitate to use the word "enjoy" due to the serious subject matter.
It is a productive exercise to use publicly available means to check the arrest records and jail rosters of several counties surrounding and including Decatur County. When one does so, there are more familiar names than just these six you mentioned being held. While their names have not officially been mentioned as connected to the case, it is odd where some are being held, etc. and we know the TBI doesn't move too fast in putting these names out there.
It is also a seemingly productive exercise to compile the stats of the physical features of each person, when they are publicly available. Google searches also often yield those facts when they are not listed by a particular jail. In doing this exercise, one can quickly determine there are not many of those indicted, so far, who match completely the physical description Clint gave of the man who took Holly. Many of these men have extremes in height/weight.
These facts have helped me formulate my theories. Of course, I think we have to consider the possibility that the family has cooperated with the investigation by both saying things and not saying certain things, for the sake of the investigation. If Clint only did "as he was told to do" by authorities, then we can see why the description may be very "generic."
I mean, can you imagine what might have happened if he said the abductor was 6'8" and weighed 300 or so? Would that not point to certain people and eliminate others? Would the community exercise some vigilante justice upon all large men?
Sadly, perhaps the authorities knew at some point that there was no more helping Holly, and they set in to prove their case. I suspect we will eventually see the game plan revealed. That's just my take right now.