Hi vpolur,
Hopefully your wife will be able to do some limited testing to see how she feels about latex.
Subject to confirming that any retailer or manufacturer on the list you wish to deal with is completely transparent about the materials and components in their mattresses (see this article) and to making sure that any mattress you are considering meets your criteria and the quality/value guidelines here … the better options or possibilities I’m aware of in and around the New York City area are listed in post #2 here.
Phoenix