#15 is interesting, but text could be flat color, and blockier font (see leading entries), and misses the IS/digital component somewhat. Maybe if the "digital blocks" from #14 formed a circle that became gear teeth. If it turned out, I could see that being a leading candidate.
I did rank #14 13th, but moved it to scrap because I didn't get why the "t"s look like daggers, and the hub on the gear was a little to literal.