Hi sleepless222,
Welcome to the Mattress Forum! 
You may have already come across these posts, but just in case you haven’t:
Post #21 here lists members here of the site who use latex in their mattresses, and many of them make products that are entirely comprised of latex.
The component post here also lists members and non-members providing latex layers, and some offer completed all-latex mattresses.
Our entire site membership is listed here, and many of these manufacturers and stores offer 100% latex mattresses.
I apologize, but in re-reading my notes I see forgot to address your statement. The Dreamfoam Ultimate Dreams Total Latex is an all-latex mattress, using a choice of a 6" Dunlop or Talalay latex core, with 3" of Talalay latex on top of that. The only other materials in the mattress are the organic wool fiber and a thin .5" piece of quilt foam (for assembly integrity) stitched together in the zippered quilt panel.
Besides those lists, I don’t keep a record of the individual mattresses or their specs that the retailers and manufacturers in the hundreds of forum lists throughout the forum carry on their floor or have available online (it would be a bigger job than anyone could keep up with in a constantly changing market) but checking their websites and making some preliminary phone calls to the retailers/manufacturers that are on the local or online lists is always a good idea before you decide on which retailers or manufacturers you wish to deal with anyway. This will tell you which of them carry mattresses that would meet your specific criteria, are transparent about the materials in their mattresses, and that carry the type of latex mattresses that you are interested in that are also in the budget range you are comfortable with.
I hope that helps.
Phoenix