FWIW, a good friend of mine who has been using Mr.Color Leveling Thinner (MLT) for past several years now uses it to thin nearly all of the various types of hobby paints he uses including all brands of enamels (dries faster, smoother, and harder), lacquers, acrylic lacquers (Tamiya, Gunze's MrColor, MCW, etc), acrylics (Tamiya, AK, Vallejo, Gunze Aqueous, etc), and so on. The only type of hobby paint he says he's found MLT should NEVER be used in is Mission Models Paint acrylics, as any type of lacquer-based thinner will turn Mission Models Paint into an insoluble goo that is almost impossible to remove or clean off (he says Mission Models Paint is a great model paint, but it must only be used with their proprietary thinner and Poly additive, exactly following their mixing instructions).
In fact, MrColor Leveling Thinner is becoming referred to as "God's tears" in our local modeling community (no sacrilege intended, just complimenting it! 😄)