Hi drm870,
I would be cautious with all of these either in terms of durability or suitability for your weight.
You can see some comments about the Tuft & Needle and other “one firmness fits all” mattresses relative to higher weight ranges in post #3 here. The 2.8 lb high performance polyfoam comfort layer would be fine but the 1.8 lb polyfoam in the base layer is just a little lower than I would normally suggest in your weight range although it could still be a reasonable “lower budget compromise”. The mattress itself is in a firmer range and would have reasonable odds of being suitable for you (and has a great return policy if it isn’t).
The Dreamfoam Ultimate Dreams uses Talalay latex in the comfort layer which would be a very durable material in the right firmness level and is suitable for any weight range but it also uses a 1.5 lb polyfoam base layer which would be a lower density choice than I would normally consider at your weight because the durability of the deeper layers will be more of a factor in durability in higher weight ranges that compress the deeper layers more than lighter weights. I would lean towards a higher density polyfoam base layer such as the 2.17 lb polyfoam in the Brooklyn Bedding latex/polyfoam hybrid mattresses (which is their sister company) such as the Bamboo Bliss.
The 12 in one customizable uses all 2 lb polyfoam which meets the minimum density guidelines I would normally suggest for your weight range but it also comes with a soft layer which may be too soft for your weight even if it was deeper in the mattress so I would be somewhat cautious about suitability in terms of PPP with this mattress although it has 12 different firmness options and also has a good return policy (although it’s not free). You may find you need to remove the softer layer and buy a 3" layer of a good quality and firmer material to replace it.
Polyfoam is the same material that you will find in most couches although there are different versions of polyfoam both in terms of density/durability, firmness levels, contouring, and resilience (springiness). While the “feel” of a mattress or different materials is very subjective and different people can describe their experience on the same mattress quite differently … you can see some comments about the high performance polyfoam in the Tuft & Needle in posts #2 and #6 here and posts #227 and #231 here. It would have some of the contouring properties of memory foam without the temperature sensitivity, slow response, and low resilience of memory foam. The polyfoam in the 12 in 1 customizable will be closer to the feel and resilience of the polyfoam in a good quality sofa that was a similar firmness level. They would both be “in between” the more resilient feel of latex and the slow response and low resilience of memory foam but I would talk to them in person so you can get a more reliable sense of the “feel” of their mattresses because they will be a more reliable source of information about the “feel” of their own mattresses than I am.
The weightless mattresses use a thinner layer of memory foam in the top layer and then a layer of a more resilient material underneath it and none of the mattresses you are considering have memory foam comfort layers so they wouldn’t be similar to the weightless mattresses. Some mattresses that have a similar design to the weightless mattresses are in post #2 here.
Phoenix