I'm assuming for CPU utilisation on the Rog Ally is Core 0 Clock 0 (perf #7/) but that option is not showing in the hwinfo drop-down on my Ally. This user on Reddit has the option, please see screenshots
The "perf #7/" denominator is not fixed and might be different on each machine or not present at all.
Check in HWiNFO sensors window how the Core 0 Clock is displayed there and match it with the plugin using to read data from HWiNFO (RTSS, etc.).