Which era country are you referring to? The above list is very applicable to classic country. Floyd Cramer would be my first recommendation. One of his signature ‘flavors’ is a grace 2nd degree of a scale note leading into the 3 note of the chord, scale etc. He does other grace notes as well. Being able to this is the essence of Floyd Cramer. It’s the equivalent of appropriate bending of notes In electric guitar playing and knowing how to apply proper sounding up/down strokes in strumming on acoustic rhythm guitar.

My Songs, photos, writing,etc.
My Sound Cloud