Little test:
SSD 1T is Samsung, and test Gamut of display
Have you been able to find out what model your screen is? I have the dGPU 2015 model and all I get from the terminal command is "Color LCD".
Looking in the ColorSync profile, the manufacturer is "00000610" which I believe is Samsung as that's what is shown in my 2012 rMBP which has a Samsung display. The model is "0000A02E" which is different from my 2012 Samsung Retina.
EDIT: The usual terminal command for finding your screen manufacturer is: ioreg -lw0 | grep "EDID" | sed "/[^<]*</s///" | xxd -p -r | strings -6