Since there is a lot of uncertainty currently with mouser due to severe weather which was the only place which stocked 90cri xhp50A, I would like to know if there are other sources for luxeon lmz9-rw30 or XHP50A.
Try Farnell
Farnell doesn’t have cri included in their parametric search. And the ones that they have are only 80 cri.
Google shows mouser as the only source for XHP50A10D0UF230G.
Lemona.lt also stocks 80 cri only as far as I understand.
Lemona…. 
….Lemona ordering from Farnell anyway.
Farnell have 5000K 90cri XHP50B-00-0000-0D0UH250G
RS components have 4000K 90cri
Anything above 3500k with a non-diffused optics will produce too much glare reflecting back from a road surface
. So seems like mouser has a monopoly at the moment or there is no demand for low CCT, high CRI outside US at the moment when it comes to XHP50.