It is worth mentioning that RAM that uses 2 gb memory chips are exceedingly rare, so I doubt they will have been tested in many motherboard/CPU configurations.
1gb chips are far more common, which limits you to 8GB per single rank DIMM, or 16GB per Dual rank. Many users who need 128gb of RAM go with Threadripper as it allows for 4 channels, or 8x16gb DIMMs which have far more options than 4x32GB. With Ryzen, you are limited to 2 channels, so 4X32GB is the only way to get to 128 GB.
Having said all that, most DDR4 RAM will work with Ryzen at the default 2133 MHz CL15 profile. The QVL list, only tells you if the RAM was tested at the XMP profile speed. So if a kit is 3200 CL18 and it is on the list, that means it works at 3200 CL18 with that hardware. If it isn't on the list, it will likely still work, but possibly not at the rated speeds. So if you are dead set on 4X32GB, I would order whatever you can find and insert them after resetting the motherboard to defaults. If your system boots with the RAM at 2133 CL15, then the RAM "works" From there you can try the XMP profile. If that fails you'll probably have to loosen timings and/or reduce the RAM frequencies a bit until it passes.
As far as the 2X32GB test is concerned that isn't apples to apples. With only a single DIMM per channel, the memory controller has to interpolate data between the two 16 GB "ranks" on each DIMM and then interpolate the two channels.
With 4X32GB, the memory controller has to again, interpolate the data between the two ranks on each DIMM, then additional interpolate the two DIMMs on each channel, and the the channels themselves. Meaning 4x32GB is harder on the memory controller than 2x32GB. So it is possible the RAM that works at a given speed in 2X32GB will not work at the same speed in a 4X32 configuration.
