Qualcomm's naming schemes are so confusing: I used to be on the QCOM Hexagon compilers team for a few years and I still don't know what hardware unit the NPU is. Is it Hexagon Matrix Extensions(HMX)?
Oh yeah, I specifically worked on HMX stuff and I don't even know. I stopped caring about keeping up with product names when we stopped using names from LOTR for our internal projects. I wish they would reveal _something_, because currently it's a bit of a black hole on my resume
While Hexagon and HVX are publicly documented ISAs, HTA (legacy), HMX and friends are not publicly documented ISA extensions.