I got supermicro confirmed compatible memory. The first server is still working with the micron, so both are just fine !
I've got the Smicro compatible Micron 32GB 2R RDIMM modules. The first 6 are retail by Micron, the new 3 from Newegg are same model rebranded by SuperMicro(Still waiting for them).
Micron part#: MTC20F2085S1RC48BA1R
I've selected it out of 3 compatible options(By Micron, Samsung and Hynix). Hynix was 1R and uses older manufacturing process, Micron had much more availability via eBay back then, so it was an easy choice
It wasn't available via Newegg then I've ordered but its there now.
In my case it's was just really a bad module, not a compat issue. Happens.