I use floors and rooms (areas) for all devices that stay in those locations (lights, fans, media players, …). Since the HA UI removes identical first parts from entity names, I tend to also name devices starting with area (and sub-area) names, like “Livingroom Table Light”, “Livingroom Sofa Light”, “Kitchen Fridge Thermometer”. When that is in the area “Kitchen”, HA removes the first part in the UI, leaving “Fridge Thermometer”. That scheme somehow coincides with at least Google Home naming, so a Nest device in “Livingroom” knows to switch off a light called “Livingroom Floor Lamp” when I ask it to “Hey Google, switch off the Floor Lamp”. (Even when I also have another device called “Office Floor Lamp”.)
Note: Using this scheme can quickly produce names that are longer than Matter allows, and GH/Alexa start using odd, cut-off names. Matter must urgently change to allow longer names! Allowing only 26 or so characters (I don’t know the exact limit) is definitely a gross design fault! I mean, “Kitchen Fridge Thermometer Temperature” and “Kitchen Fridge Thermometer Humidity” or even “Kitchen Fridge Thermometer Battery level” are different entities!
I haven’t finally decided on a good naming scheme for mobile devices (phones, tablets, laptops, smartwatches), since these can move around and belong either to a person or are used by several family members.
Currently, I add personal, trackable devices like cellphones to the person records, so HA can determine if the person is home. I still did not set an area for these.
For weather and environmental hazard warnings, I have an area called after my village name. Kinda larger “Home” 
Looking at other ecosystems like Google Home and Alexa, who put all devices that are not in a “room” into a general “Home”, I was tempted to follow that scheme, but my perfectionism kept me from doing so. After all, a cellphone might not be “Home” part of the day, and we actually use it to determine if we are home…
If the need arises, I’d probably go for labels like Person 1
, Person 2
(their names), Family
(if used by more than one person), or simply Mobile
, and still leave the area unset.