Notifications not working on iPhone and iPad

I have 3 devices - 2 iPhones and 1 iPad. All recent and up to date. Notifications stopped working on all three. I read several articles here and in Apples official support pages and went through all the devices checking settings in Focus, Notifications, Privacy and Security and Messages. All seemed correct but I unset and set them all. Also logged all the devices out of iCloud and back in (without saving data locally). After all of that one of the devices, the iPad, is working correctly. The older phone is giving alerts correctly except that sounds are not being made. The newer phone is still only doing badges and no other notifications. I can’t find any other resources (I must have read about 20 proposed solutions) so I thought I’d see if anyone here has any thoughts on next steps?

[Re-Titled by Moderator]