I think 11 and 12 have potential, however the icon could use a bit more thought: one looks a little like a question mark and the other like a maze. Nice use of color and type, and maybe a tweak would make it work. Thanks.
What happened here with the withdrawn one which was ranked? On the new one, don't like the green....too hard to see. Prefer something deeper, ,maybe just another version of the blue. Still liking the idea though.