There isn't really anything that I can add. Putting all the pieces together from a few of the posts you actually can find your answer.
Thankfully this is a live fish (not preserved) because color does play a role and is supported by the spots.
First, color. It could be the camera angle, reflection from something else in the boat, but the background coloration of the fish appears to be yellowish green. This is more typical of cutthroats and not rainbows. Rainbows typically have a silver white background.
Second, spots. The fish has lots of fine spots concentrating slightly toward the tail, typical of cutthroats. Rainbows have bolder spots that are evenly spread over the body.
Third, stocking. Rampart doesn't have any native cutties. Rainbows were stocked before whirling disease and cutbows thereafter.
Fourth, genetics. As it has been mentioned, if it is a cutbow, the parental strains can be exhibited and isn't going to be a 50/50 expression of the alleles.
So, most likely (90% certain) that it is a cutbow that is exhibiting more cutthroat like characteristics.
Well, that was an expensive 2 cents. :)