I just replayed Secret of Mana on an original SNES co-op with my spouse and it was truly awesome. Many people who have played a lot of JRPGs still haven't played it.
And I'll second the Octopath Traveler recommendation!
Oh yes, Chrono Trigger and Secret of Mana! So good!
By the way: Octopath Traveler came out for Nintendo Switch a few weeks ago and is awesome (a modern JRPG). Its stories are good but not as deep. Gameplay and music are really great.
The music is phenomenal. Soundtracks are floating around on YouTube and such if you don't have time to play the game. I found it great to listen to while working.
As well as Shinning Force, Breath of Fire, Phantasy Star, and Illusion of Gaia.