Hi forestsw,
Most of the manufacturers or retailers in the New York list you linked sell innerspring mattresses with a few exceptions (such as Dixie Foam and White Lotus). I also added one more (ComfortBedding) which have some low/mid quality innerspring mattresses which I hadn’t carried forward from another list previously.
If you check their websites or call them they will give you a better idea of what they have available on their showroom floor.
There is also a more categorized list for Northern New Jersey in post #7 here which has a more detailed description of some of them as well.
Phoenix