[PROBLEM] Identify multiple Pi's on network

[GuitarManMike]

^^^^
Exactly that.
And FWIW, I also have my four RPi on static IP addresses, with the addresses and host names set up in the “reserved IP” table in my router.

I then set up a dedicated icon for each RPi on my PC & tablet desktops.

The missing piece for me was Browser Name.  What does Host Name do?  Is it functionally useful beyond network administration stuff?  I'm set up similarly, but can you explain host names?  I manually set them before in the router table, but with the new names set, but not updated on the router, everything still seems to work.