I did some quick comparisons last night, as you can see above!
Warm Chill is closer to Metamorph than Juxt, but instead of having a cool-yellow kind of undertone, Warm Chill is more of a gold-green undertone. They’re different; I definitely wouldn’t say Juxt is a dupe.
Climate Blue isn’t like anything I currently own, but I do think it is similar to Jeweltone (but I think it may be darker/richer in purple, more of a royal purple).
Blue Flame is almost like a cross between Deep Truth and Freshwater — I originally recalled Flashtrack, but thinking about it, I think Flashtrack is darker than Deep Truth (I don’t own it, so I’m going purely by my unreliable memory). It’s definitely not the same as Deep Truth, because it is bluer and a bit brighter; but Freshwater is obviously much lighter than Blue Flame.