Hi Syracusa,
Have you tried calling all the smaller manufacturers in the Atlanta list to see if they can make a mattress that fits your criteria that you can test in person?
While I don’t have the time to look at all the options in the Atlanta list in more detail or call them … a quick search shows that Room and Board has latex/innerspring hybrid that seems to fit your criteria here (innerspring, 100% natural latex comfort layers, and wool quilting).
Ikea also has one here that uses their 85% natural latex and may be “natural enough” for you (Note: Ikea has discontinued this mattress)
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There may be some others as well.
Several of the members here that sell mattresses online and use a combination of innersprings (usually pocket coils) and latex include …
www.mygreenmattress.com Makes a latex/pocket coil mattress with a wool quilted cotton cover.
http://www.baybed.com/ Makes a range of customizable component latex/pocket coil mattress with different options to choose the pocket coils, the thickness and firmness of the comfort layers, and the cover.
Ultimate Hybrid- Pocket Coil/Latex Component latex/pocket coil hybrid with a wool quilted cotton cover with several options to choose the thickness and firmness of the comfort layers.
Latex Mattresses, Organic Latex Mattress, Pocket Coil Mattress - Flexus Comfort and QUADRA-Flex® Pocket Coil Latex Mattress - Flexus Comfort sells one-sided mattress using latex on top and also a two sided pocket coil mattress that has latex and a thin layer of polyfoam in the comfort layers and a polyfoam edge support.
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Dreamfoam also sells a lower budget latex/pocket coil here which has 2" of Talalay latex and some polyfoam in the comfort layers (I’m not sure of the specifics of all the layers and components).
Nest Beding Has a latex/pocket coil mattress with a wool quilted cover.
lumasleep.com makes a latex/pocket coil mattress that can be purchased with or without a latex topper.
While they are not a member here … https://www.berkeleyergo.com/ and https://savvyrest.com/ and naturepedic.com/ and Bed Mattresses | Berkeley CA | European Sleep Works also have component mattresses that would also fit your criteria for materials and can ship their mattresses across the country.
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http://www.thenaturalmattressstore.com/products/latex-with-springs Makes a wide range of latex/innerspring hybrids.
naturalbed.com/coil/ Makes two latex/innerspring mattresses
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https://www.charlesprogers.com/ also makes a line of latex/innerspring hybrids but make sure you can find out the specifics of all the layers of any of their mattresses you are considering.
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There is also a list of manufacturers that make innerspring/natural fiber mattresses in post #4 here and many of these also make innerspring mattresses that include latex comfort layers with no polyfoam.
There are only two ways to have a reasonable sense of how a mattress will feel for you. The first is your own personal testing or experience and of course this is the most accurate.
When you can’t test a mattress in person then the second is a more detailed conversation on the phone with an experienced and knowledgeable online manufacturer or retailer who can help “talk you through” which of the options they carry has the best chance of working well for you. They will know more about how their mattresses feel to different people than anyone else (or anyone here) and they provide this type of guidance to their customers every day. The more information you can provide them on the phone the more you can help them to help you make the best possible choice.
If you are still uncertain whether a mattress would be a good match for you after a more detailed conversation then the options you have after a purchase to exchange or return the mattress (or individual components) would also become a more important part of your purchase decision so you can use your own personal sleeping experience to decide whether a mattress is a good match for you with only the risk of the time and effort to return or exchange the mattress or individual layers (and of course any costs involved which I would make sure you are comfortable with before a purchase just in case).
Phoenix