Improve 'Recently Online' list

When I look at my environment I have 2 types of devices: Mobile (or portable) devices like phones, tablets, portable game consoles, and smart watches then I have Infrastructure (non-portable) devices like home automation, home security, media streaming, smart speakers, printers, hard drives, and the like.

I expect the mobile devices to be mobile and when they appear in the Recently Online list it really isn’t news. But, when one of my infrastructure devices goes offline, I’d like to know about it because it is something I am depending on and the sooner I can take action to correct the failure, the better.

But, the Recently Online list is cluttered with known and unknown mobile devices making It very difficult to know when something important fails.

There should be a way to flag mobile devices so they do not wind up on the Recently Online list. Perhaps an option on the device information file. Or, the opposite, flag infrastructure devices so only they show up on the Recently Online list. Either way. I really can’t use the list the way it is now.