Updated my earlier post here. The G.Skill 4800MHz was just delivered. Posted on XMP without a hitch.
 
G.Skill Trident Z Royal Elite 4800MHz 2x16GB
P/N: F4-4800C20D-32GTES
Modules: Hynix
Tested with 2 sticks on Z590 Dark. Loaded XMP defaults and Gear 2, saved and rebooted, posted no problem at all.
 
Thanks rblaes_99 for the help.
 

DEJ915
bdie is only 8Gb (1GB) size chip so maximum of 16GB per module, if your modules are 32GB they can't be bdie.

Ah!  I didn't know that. Thanks for the info!

https://benzhaomin.github.io/bdiefinder/

Just to add to this list:
 
G.Skill TridentZ 3600MHz 16-16-16-36 1.35v
P/N: F4-3600C16D-16GTZR
Modules: Samsung B-Die Dual Rank
 
2x16GB. XMP or manually, 3600MHz will not run in gear 1. Highest gear 1 speed is 3466MHz. Currently have settings at 3466MHz 14-14-14-32 1T 1.4v Gear 1.

going to test these memory sticks out next week once I receive them...
 
G.Skill Ripjaws V series 4000hz 
F4-4000C14D-32GVK

• Timing 14-15-15-35 
• CAS Latency 14 
• Voltage 1.55V

i just got the 5333mhz kits back from gskill RMA..... still wont run at xmp on the dark.   not as of today at least.  

so let me get this straight even tho the Dark advertises that it supports DDR4 5333MHz+, we have no idea what Memory they used and have not found any memory that works???    Sounds like false advertisement if you ask me.
 

yea frustrating....  i have spent a ton of money on premium ram kits too......  this has been quite the beta experiment.  

At that speed it may require manual tuning or the CPU memory controller is just not able to run at that speed.

DEJ915
At that speed it may require manual tuning or the CPU memory controller is just not able to run at that speed.

correct....  i think this is exactly why there isn't a QVL for tested ram.   it would be pointless for EVGA to publish this as they have no control over the CPU you ended up with.