https://wccftech.com/favored-core-explained-intel-cpus-with-turbo-boost-max-technology-3-0/

Intel introduces the Intel Core X-series processors in October 2019. Four new processors are suited for advanced workflows that vary in need for photo/video editing, game development and 3D animation. (Credit: Intel Corporation)

Not all CPU cores are created. Equally, Intel's fabrication process lends to subtle differences between each core's voltage, power, and thermal capacity, which does make changes to the performance of each core. Each current-generation Intel CPU is designed to find the fastest and most power-efficient core and label it as the favored core.