I've also noticed that I've always liked a lot of Christian rock even though I'm not particularly theist or religious. I think this is probably because, beyond being catchy, the lyrical content's themes cater to my Ni seeking a lot. Themes of seeking to have faith or for things to come in the future, or strong devotion to the invisible/unknown.

E.g. lyrics from a song I found recently that I liked (Something to Believe In by Parachute):

"You walk the streets at night still looking for your reason
But you don't wanna try
You swear the world has got you backed into a corner
But no one holds your hand to walk into a fight
You swear the light is gonna find you
But it can't find you when you're waiting all the time
You say, "keep my head from going down"
Just for a little, just for a little
Watch my feet float off the ground
Just for a little, just for a little
Love, if (love if)
You can (you can)
Hear this (hear this)
Sound
Oh, just give me (give me)
Something, something to believe in

You spend your days alone still hopin' for the truth, oh
But all you hear are lies
But no on else is gonna tell you what to do now
No one else is gonna help you hold the line
Sometimes it's hard to keep on living
But you're the one who's got to know just when it's right
You say, "keep my head from going down"
Just for a little, just for a little
Watch my feet float off the ground
Just for a little, just for a little
Love, if (love if)
You can (you can)
Hear this (hear this)
Sound
Oh, just give me (give me)
Something, something to believe in
Love, come take me now
Love, come take me
Love, come take me now
Love, come take me, take me now"


^ This could apply to life in general or love, any general life themes like that.