Beam shots of the 3 lights. On my two laptops neither of the Nichia has a green tint, but when I use the computer at work, the Nichia 219c has a very slightly greenish corona. This is an example of how evaluation of colors are tricky - the computer monitor if uncalibrated changes what we see.
I tend to prefer pictures of actual objects, a room for example, more than white-wall beam shots because pictures of these familiar objects that I see daily seem to tell me more about the color tone of each LED. Still, beam shots provide useful information, so here they are, taken with camera’s WB fixed at 5000k. To my eyes, the magenta signature of the 2 Nichia’s are fairly obvious (below BBL) while Luminus SST-20 has primarily yellow tint, and I go back and forth whether it has a green tint. If it’s there it’s exceedingly slight IMHO.
I also think the magenta tint is brightness dependent. It is more prominent when the light is dim, such as at peripheral spill, and less so when it’s bright, such as at the hot spot in the middle of the beam.