I dont know a lot about this stuff, although it is very interesting. From what Ive read, logos,as used by the Greeks speaks about an abstract idea that involved the way god created the universe. The gospel of john attaches a distinct identity to this, which is actually a radical change.
As has been discussed recently on this forum the Jews had adopted the Logos concept as a variation of the much older 2nd Power theology. The G. John's use of the expression is actually pretty consistent with Philo's. The distinction some Christians make is that their Logos was a physical being. That ignores the Jewish tradition that the 2nd power had at times taken a physical appearance to eat or commune with humans. A second aspect rarely considered is that the Gospel narratives were originally metaphor and dramatizations in the same spirit as was popular, in both Jewish and Christian circles, to understand many OT narratives. As such it is difficult to be certain just how much conceptual light can be seen between Hellenistic Judaism and a sect of that movement that eventually became called Christianity.