The best way to get a certain tint, especially if you don't know what letters/numbers are used to designate said feature, are to ask the seller/manufacturer. When a seller advertises "neutral," it usually means anything that's not pure white or blue in tint. If they specify "neutral," they'll usually state the emitter and you you can do a search for what that specific tint is . . . some of the more popular are Q3 5A and Q3 5B. 5A is more yellow/peach, 5B is more brown.
MC-E shades are a mystery to me. Look them up on Gene Malkoff's site . . . I know he sells MC-E dropins as either neutral or warm. In that case, the Neutral/cool is the uncontrolled, standard brighter version and the warm is the slightly less bright but nicely tinted light. I have no experience with Gene's MC-E dropins but I do know that the shade designations are WC/WH and some others . . . like I said, go check his site if you want to find that out, I never bothered since I have what I think are perfectly white MC-E lights . . . two of them!
Personally, as long as a light's not green, I'm good. There's no designation for that, though. As with most other things, being on the cutting edge has its drawbacks. Higher bin LEDs just run the risk of coming with a greenish or bluish tint. I'm a tint monger, but even a sickly green tint didn't keep me from EDCing a Nitecore D10 for awhile . . . though it did keep some Quarks on the shelf!
:devil: