Is there any other 3535 at 2200k or less? I know of XT-E and XP-G3
I have 2200k 80 CRI Cree XT-E in a triple S2+. The tint shift is an abomination until I used dc fix and minus green filter and now they look fantastic (even next to 219b) 
According this test, 219f has a lot of tint shift, so it also needs to be diffused for best light quality.
I really like the Amber XP-E2 for HPS emulation but I’m looking forward to these as well.