What is the status of HTML password generator rules?

I'm trying to convince some of the businesses with websites I use to support the Apple Password rules.https://developer.apple.com/password-rules/


Is this somewhere in the IETF process? I tried to find an RFC but can't find anything relevant. The closest I've been able to find is https://tools.ietf.org/html/rfc8265 which seems quite different.