Same Singeture, Same Time Zone, Almost same date registered
That is not proof, at least not solid one.
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Most addresses have only one transaction/new addresses without transaction.
I don't see how these accounts are connected.
99% of the times on the same bounties in the same order... with same format, seems clear to me!
You need solid proof of connection, bunch of random twitter/facebook accounts signing up to the same signature in the same order is not solid proof.

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Half topics have been trashed, that's why we use archive.fo, so deleted posts can be visible.
What is connection between these accounts? I don't see it in your post. Can you update post with proofs?