When I look at this document: https://www.intel.com/content/www/us/en/support/articles/000006105/processors.html
It says that only a couple of family of Intel CPU actually support Windows 10 32 bit, but in reality I know that at least up to 4th gen does. Is this document in error?
Technically, the document is not in error; it just, um, ignores some exceptions. Intel, moving forward from that decision point, is only maintaining the 64-Bit Windows 10 drivers. Those 32-bit drivers that do exist are frozen and I believe only security-related issues will be considered for address.