^ Yeah, that's Robert Wood's Ariel
emblem that I was referring to. I had intended to mention the Penal colony emblem, but I forgot about it at the keyboard.
This page at Memory Alpha has a clickable Huron
emblem in that chart is missing its inset "radiant star," by the way, best visible on Captain Ramart: http://en.memory-alpha.org/wiki/Ramart
The Cestus III/outpost emblem does look like a fish, but Memory Alpha describes it as a seashell. I've never seen a great picture of it. Even in the remastered episodes, it's too blurry to make out in detail.
I did forget about the UN-like emblems; those are both from The Cage,
right? I don't recall whether they were in Where No Man...,
or any other episode, off the top of my head, but I'll admit they could have been.