During the height of the activity with the Global Warming Challenge I made a page that listed all of the submissions and updated it as I received new ones. This allowed people that made submissions to follow my progress. I recently went through all of the submissions - my personal waking version of a recurring nightmare - and added a synopsis to the listing for each submission describing what it was about. This made it a handy reference for anyone doing research on contrarian claims. Some of them were much less than credible, but some of them were typically representative of contrarian claims.
If you are looking for information on these kinds of claims (and the science), then I hope this can serve as a resource. Let me know if I can do anything to make it more useful. Happy hunting.