AirPods Selectively Missing From FindMy

We have a FamilyShare and everyone's devices shows up on everyone's FindMy apps on their various devices (mbps, ipads, iphones). Except on one particular iPhone a particular set of airpods doesn't show up. These airpods are the latest AirPods Pro 2 bound to one family member's ID and it doesn't show in the FindMy app on another family member's old iPhone X. The devices are variously running Sonoma/Ventura/Monterey, iOS 17/16 and iPadOS 17/16 and all seems okay on them - its just this iPhone X and this Airpods Pro 2 having the issue. If we unpair the airpods from the ID it is bound to and pair it with the ID bound to the iPhone X on which it doesn't show, these very airpods then start showing up on everyone's FindMy - but that isn't how it is being used. We have tried resetting etc. to no avail.

Appreciate any ideas anyone may have in getting these aipods to show up on the one FindMy. Thank you!

Some of the articles we referred to were:

How to reset your AirPods and AirPods Pro - Apple Support

Change the settings of your AirPods and AirPods Pro - Apple Support

If an item or device is connected to another Apple ID - Apple Support

Cleaning AirPods, AirPods Pro, AirPods Max, and EarPods - Apple Support

If your left or right AirPod isn't working - Apple Support