FWP Quarantine Question/Pointers?

I have my FWP set to quarantine all my networks. While this is driving me nuts, releasing user devices, I keep thinking, would you rather have a network free of hackers or know what every single device is and to what network it should belong? With that out of the way, my daughter recently got a new iPad, and it was placed in the new device quarantine. So far so good, I turned off "Mac Address Randomization" released the device and everyone was happy. Today, I decided to do some testing of the new device quarantine. I have a main Wi-Fi and a kids' Wi-Fi SSID. If I put myself on either SSID, I must release my machine every time unless I give myself a static IP. Also, while configuring, some new devices popped into the quarantine that I didn't recognize, and they said unknown.lan, and they had "Mac Randomization" on. I still can't find these devices, and I have looked at every MAClookup tool website I can think of, but I don't know what to do. I know I can keep deleting anything that says unknown.lan, but I like to keep the quarantine clean and to know what every device is.

I am using a Ubiquiti Cloud Gateway Ultra as my router, and I don't see those devices listed in the "Clients" list on the Ubiquiti Cloud Gateway Ultra.

I guess I am wondering: Are there better ways of doing what I am doing? Or do I keep chasing down devices and just live with that?