I have a local Network with a Window 10 computer and a Windows 7 computer. Both have the same Network Settings (visible to other computers, etc.).
On the Windows 10 computer, I can see both the Windows 10 computer and the Windows 7 computer in the Windows Explorer Network Group, but on the Windows 7 computer, I don't see the Windows 10 computer.
The Windows 10 computer runs Windows 10 Pro, Version 1803, Build: 17134.285
The Windows 7 computer runs Windows 7 Home Premium, Version 6.1, Build 7600
What might be the reason for that?
Here is a screenshot:

WORKGROUP. – Run5k Sep 25 '18 at 18:16Publicnetwork profile (and should probably leave it in the current configuration for security purposes), I wouldn't worry about it too much. – Run5k Sep 25 '18 at 19:41