It’s strange that the Apple TV 4K isn’t part of your mesh network. My Apple TV 4K, two HomePods, two G5 Pros and one G410 are all listed under “_meshcop._udp” and form a common Thread network.
However, the Aqara app also only shows the IP addresses for my P2 motion sensor and not the network information.
When I look at the diagnostic data from the sensor in Home Assistant (paired via Multi-Admin), I can see the network information. So far, everything looks good.
As far as I can tell, the sensor works perfectly well in the Aqara app, Apple Home and Home Assistant.
I had already read and verified that the P2 sensors do not have a Thread Network Diagnostics Cluster.
That would explain why the P2 does not display network information. Unfortunately, I don’t know what was programmed there, but perhaps the app first searches for the cluster and then looks for the data in another way.
And in the case of “sleepy end devices,” I could also imagine that the sensors are asleep and no data can be queried until they are awakened. But I’m just speculating.