Personally, I'm a huge fan of Hollow Knight, Ori and the (Blind Forest/Will of the Wisps), and Kingdom Hearts. Orchestral soundtracks are just something else...
For me, Shovel Knight and Chrono Trigger tie for first, followed by Ocarina of Time and Super Mario World.
Fun fact: nearly every single song in the Super Mario World soundtrack is a variation on one single melody, so its diversity even with that constraint really showcases how cleverly it was created.