Great article. Did you consider doing Optane tests? I built a 3990x WS with all-optanes and I get blazing fast access times, but 3gb/s top speeds. It might be interesting to look at them for these tests, specially in time-sensitive scenarios.
I have 2 Optane 905P M.2 cards and I intend to run some database engine tests, putting their transaction logs (and possibly temporary spill areas for sorts, hashes) on Optane.
When I think about Optane, I think about optimizing for low latency where it's needed and not that much about bandwidth of large ops.