@Steve-Mcl Great questions - so I started checking. After writing a long response with multiple graphics and I then deleted that e-mail.
Why: Because I posted this issue in another area with HA Forum (as we discussed) and rec'd an inquiry for me to check. THis caused me to change a parameter in Node-Red and whamo !!!.....many, many more areas showed up.
So, in Node-Red, a strange behavior? Depending on the "domain" you select in the "edit node" window, more area/rooms seem to load - or appear.
So - when I first selected the domain "light" in the "edit node" window, a set of areas/rooms are loaded (?) into Node-Red and presented. (but only those associated with that domain?)
When I change the domain to "switch" in the "edit node" window, and then select "area", a "new" or "added to" set of areas/rooms are loaded (?) / presented into Node-Red - or becomes visible (I am not sure how Node-Red loads and presents data from HA.).
Now, when I change domains back to "light", the areas loaded from the "switch" stayed. So Node-Red does not dynamically display only those entities associated with a domain. Does that make sense? It seems you need to select different domains to get all areas loaded or to be presented in Node-Red.
However, being a newbie, I am not sure - do you need to select an "area"? and if you do - does it have to have the entity in that area? Maybe more learning.
So - I think Node-Red is working, HA is working, (both great things in my world!!!). I simply need to learn Node-Red and understand its ...quirks? Maybe not a quirk. Maybe it is showing what I asked for - I just did not understand. Always humbling. But learning all the same - a good thing.
Many thanks for your all your help (!!) - it got me on the right track!!
Any advice on the "area" concept for understanding would be appreciated.
Many Thanks to you SteveMcl !!