Nothing else reaches the same quality as Chrono Trigger in the same way. You have to settle for lower quality with similar pacing, or try to reach the same level of quality in a different way.

Similar pacing, lower quality: Phantasy Star IV, Super Mario RPG, Final Fantasy IV
Comparable quality, different style: Earthbound, Final Fantasy VII (FF6 is the real answer, but FF7 is the most similar game to FF6)
Similar aspects, lower quality: Dragon Quest IV, Radical Dreamers & Chrono Cross, possibly Radiant Historia