Good points about Zpacks using CT5K.18. That stuff weighs 48.4g/m2 and the hybrid weighs 99g/m2, so the wov layer must weigh 51g. It's gotta be wov.20-ish.
I've always thought HMG's polyester (wov.32) looks to be about 70D and that makes sense if Zpacks is using an 50D weighing 3/4 as much.
It seems like McHale's CT9, CT13 and CT22 simply refer to the first part of Cubic Tech's model codes that tell the amount of spectra present. You'll notice on Cubic Tech's product sheets that the increments they do of spectra are
CT2.5K, CT5K, CT9K, CT13K, CT18K, CT22K
9, 13 and 22 all happen to be available quantities of spectra, so CT9 likely refers to CT9K worth of spectra etc. I suspect he's not using high-bias because as far as I can tell, all of his talk about high-bias was from before he started playing with hybrid cuben. I think he felt that the regular versions of cuben didn't hold up well enough, so he played around with high bias for a while before moving on to hybrid cuben. High bias is neat, but it does nothing to solve abrasion resistance, which is regular cuben's achilles heal, so opting for thicker mylar or heavier polyester is a better use of weight.
I presume he's using wov.32, because wov.75 is too heavy to fit with his stated numbers and I doubt he'd go lighter than 32. If McHale's CT9 does refer to CT9K, and he's using wov.32, then he must be using the 0.08 mylar if his numbers are correct. CT13K.08/wov.32 would be 3.71oz, whereas CT13K.18/wov.32 would be 3.9oz - kinda far off from Dan's statement that his CT13 weighs 3.6oz.
So the Rosetta stone might be:
CT9 = CT9K.08/wov.32
CT13 = CT13K.08/wov.32
CT22 = CT22K.08/wov.32
Some quick calculations reveal these theoretical fabrics to weigh 3.44, 3.71 and 4.18oz/yd2, which matches rather well with Dan's numbers of 3.4, 3.6 and 4.2oz. I am a bit surprised that 0.08 mylar is what makes sense with the calculations though. There's always a possibility that Dan's weights are off and he's using .18 mylar like everyone else, but it seems like he's opted for more spectra but less mylar. If he was using .18 mylar then these fabrics would weigh 3.65, 3.9 and 4.4oz/yd - plausible but a less clear match.