I don't know what happened but, apart for the Pico, Raspberry Pi no longer exists since it's generally unavailable. Edit: The Pis, both standard and zero, are

I don't know what happened but, apart for the Pico, Raspberry Pi no longer exists since it's generally unavailable. Edit: The Pis, both standard and zero, are effectively Broadcom chips demo boards so perhaps the issue is with Broadcom... Pi Picos, which are based on an in-house chip AFAIK, seems to be available without too many problems.