Xenoblade Chronicles for me. I never played this till it came out on Switch, and I was not disappointed.
Mario Galaxy is another one. Once again, I never played it till 3D Allstars came out. Now it is my favorite 3D Mario game.
Metal Gear Solid also fits the bill. I never played that one till after MGS2 came out. Still blew me away all the same.
On another note to the OP, how is Chrono Trigger a 10 hour game? I play it almosy every year and I always get about 20-25 hours out of a single playthrough. Did you skip all the side arcs and Black Omen at the end? I just find it hard to believe 10 hours is possible without intentionally just blasting through the main story.