Here you are. But I apologize for the crappy beamshots, I don't think they are going to be very useful. I tried my best, but I am still not satisfied at all with the result... Blame my poor skills and the crappy phone camera (set on daylight to maximize tint difference). The drive current also make a huge difference, with a distinctive tint shift at lower current. Hence the poor results
This is Nichia 219 (high CRI SW45 from IS), in a Xeno E03 vs XP-G high CRI 90+ Q2 7B (in a P60 module, 700mA current) (always from left to right)
Nichia 219 vs XP-G2 high CRI 90+ Q2 7C4 (P60 module, 1050mA current...)
Now Philips Rebel 4000°K 85 CRI (from Zebralight H51c), maybe Rebel ES LXW8-PW40 (?) vs XP-G
Rebel vs XP-G2
and now XP-G vs XP-G2
I don't think the beamshots do justice to the XP-G (it will also depend on your screen), I found (probably highly suggestive) the colour "pop" mode with XP-G than XP-G2.
Now as a warm/neutral tint fan, I can say you can't go wrong with Nichia 219 (at least the "old" version 4500°K, haven't tried yet the new 219B). XP-G and XP-G2 are in the 7 range, very warm, almost warmer than an incan....but there is in my opinion still something with incan compared to leds, even the better
Edit: as for my personal tastes, in order of preference, I'd say Incan>Nichia>XP-G>Rebel 4000°K>XP-G2>.......>XM-L T4 7C>........>CW
Edit²: I also LOVE the tint of my HDS High CRI, maybe even better than the Nichia, unfortunately I don't have it here to do beamshots, sorry.