Here's the thing, to me gospel is not really a musical style. The gospel is the word of God, the style u use to deliver it is up to you. So, listening to only gospel music is great if u got a variety. If u only listen to one artist using one style that u like, then ur not gonna be as versatile.
U can use any style of music for gospel: churchy, jazz, blues, rock, pop, R&B, hip-hop It don't matter, just as long as the words come from the Bible, then it's technically gospel.