Hi Xchanger: You have many ideas here, and I admit I had trouble following all of them. I suppose you are not finished, and that when you post some conclusions, I will have a better idea as to what the "unifying theory" is, and how it has led you to some ideas on decryption. I hope you get around to that point for us.
Meanwhile, a few thoughts below... and none of them are meant to be arguing against your comparisions, most of which I agree with. I'm only giving some of the previous thoughts by myself and others, on the images and ideas you present:
In this post:
viewtopic.php?p=99&sid=0265ebdcfc263264 ... 09a953#p99 you list various rings. I agree with those ring identities, but not this one:
https://www.jasondavies.com/voynich/#f5 ... 0.411/5.00
The one here does not have the double line of the others, and so I personally believe it is meant to be an orb, or disk, and not a ring.
Different people have suggested this is a clock, or watch, because of the "hand like" shapes, but I disagree:
https://www.jasondavies.com/voynich/#Ro ... 0.899/5.00
If meant to be anything, this looks to be the alchemical symbol for the Sun, or Gold (Gould):
And I think that might follow in the context, as the other corners of the Rosettes are: Upper left and lower right, the Sun, and upper right, a T/O map of the world. So having a sun symbol on the lower left might fit that theme.
As for the reference to gold that you cite, perhaps it is the one on the Journal of Voynich Studies (JVS):
https://www.as.up.krakow.pl/jvs/JVSvolII2008.htm
On that page, Berj Ensanian/ KI3U quotes David Suter, "Turning some page, the number of which I did not have time to note, my eye was caught by a single "gallows"- like marking in the middle of some text; I believe it was formed of gold leaf."
And then Berj goes on to identify some possible places where actual, metallic gold may be pressed into the surface of the Voynich. You can see them listed there, but here is a composite image he prepared, of some of them:
http://www.as.up.krakow.pl/jvs/library/21-1-2008-08-31/
As for the possibility that there is some sort of "numerically based" code here, I've also thought that a possible in the past, as have others. I'd love to see your suggestions for decoding, when you have a chance.
Rich.