Hi shch,
Post #2 here has a list of the better options and possibilities I’m aware of in the NYC area and post #7 here has a more categorized list with some more detailed descriptions as well.
I don’t keep a list of the specific models or mattresses that each manufacturer offers (that would be an impossible job) and of course only your own testing and experience can tell you whether a mattress is suitable for you in terms of PPP … you are fortunate that there are several in the area that still make innerspring / natural fiber mattresses that may be well worth a phone call … although they would be significantly more costly than the Pure Echo (and would probably have more wool and other materials as well).
Phoenix