Currently leaving out those from "classical music" (in its broadest sense, and of which there are many) my list would include:
Several by Ivan Drever: Leaving Stoer, The Rose of St Magnus, El Caballo Blanco.
A bigger several by Phil Cunningham: Sarah's Song, The Pearl, Bright Star in Cepheus, The Gentle Light that Wakens Me, Loch Katrine's Lady and Irish Beauty.
Some of Shetlander's Tom Anderson's: Da Slockit Light, Shingly Beach.
Scott Skinner's: Hector the Hero, The Music o' Spey
and I could go on......into my Irish favourites!