The Crucified was hard core when I was in high school. That song Pure by Superchick is pretty catchy. Jeff Buckley has some okay stuff. His cover of Cohen's Hallelujah is clean. Unfortunately I think that's about it. That's the end of the list for Christian music that I like, other than choir music. I listened to a guy named Joel Weldon out of necessity when I was really young, but after discovering secular music I realized just how boring he was.
I listened to a lot of Christian genres, especially rock and metal but stopped when I discovered secular bands with deeper, more meaningful lyrics, and better sound.
One can only take the same “I am terrible, he is worthy” themes repeated over and over before you gotta move on.