The processor is selected by various parameters and the important one is DCH Design Principles.
https://learn.microsoft.com/en-us/windows-hardware/drivers/develop/dch-principles-best-practices
Some of the 7th generation processors and all 8th generation Intel processors are supported for Windows 11. Hopefully, windows might add more processors in the future based upon their testing.
Windows 11 supported Intel processors
https://learn.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors
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