I was prompted to try and ID this squid from a reddit thread on r/squid. This is a photo of the squid that was taken by NOAA in Operation Deep Scope back in 2004.
I have seen the image circulate the web over the years, but I don't know if anyone has been able to identify it since...
I am trying to get my footage of cephalopods sorted and came across this one filmed off the San Clemente trench from 600m and caught in a cod end trawl (link below). It's not a Humboldt I don't think.