I think that they are all from the CPU/chipset (8065), not from the WLAN.
Discussions from 2016 in e.g. these threads / pull requests:
Supporting thermal sensors on ipq806x
https://github.com/lede-project/source/pull/533
(the chipset actually/supposedly supports 11 sensors in 8065. All eleven sensors were visible in the testing phase a year ago, but most of those are some kind of duplicates)