+1 You could also check the "CPU" section in HWiNFO, it lists P-cores and E-cores directly. Another option is using PowerShell with the command `Get-WmiObject Win32_Processor` to get core count details. Hope that helps.
Yeah, that's a solid approach. For a quick visual, you can also open Task Manager, go to the Performance tab, right-click on the CPU graph, and choose "Change graph to" > "Logical processors" to see them all laid out.
This happened to me too. I found the Windows Task Manager, under the Performance tab, actually labels them as "Performance" and "Efficient" when you click on CPU.