Google has inadvertently confirmed the existence of the first 'Google Silicon' chip, the GS101. Codenamed 'Whitechapel', the GS101 will debut in the 'P21', a possible collective term for the Pixel 6 series.
https://www.notebookcheck.net/Google-confirms-Google-Silicon-GS101-custom-SoC-months-ahead-of-Pixel-6-series-launch.537674.0.html