George³
Prominent
It seems I was wrong by a month or two about the start of actual DDR5 production at the new Nanya factory. That's my fault.Once again, they currently only supply custom/industrial solutions. And prior to 2017 all their memory was made jointly with Micron
As such, they are currently an up and coming bit player, hats off to that feat of both surviving and developing DDR5 solutions.
While DRAM does not have as large of a graveyard as HDD, there are some notable names among the many (Intel exited 1984).