Well, I can name a few that are musically and lyrically talented, and not mainstream in any way shape or form, at least not anymore (they were fairly known back at the start of the 90s). The only thing about it is, it depends on your taste in music. Industrial music is definitely a fringe style, but the four most well-known Christian Industrial bands are:
Mortal, Circle Of Dust (this band broke up a few years ago), and the Circle Of Dust side projects Celldweller and Klank. Mortal is more along the lines of 'Head Like A Hole'-era Nine Inch Nails in terms of how the music actually sounds (subdued, not very heavy, I mean; not really sleazy like NIN's music tends to be musically). Circle Of Dust was more or less an Industrial Metal band like Stabbing Westward (like Stabbing Westward was on their 'Wither, Blister, Peel, and Burn' album). Klank and Celldweller are still very much Industrial Metal like Circle Of Dust was, but Celldweller leans very heavily into dancier music and Klank is very metal. Basically they're kind of like polar opposites.
Klank's albums are available through iTunes. Celldweller's and one or two of Circle of Dust's are available through Amazon, and Mortal's newest album is as well (but their best-known works are discontinued, and you'll probably be hard pressed to find a used copy; it took me a couple months to find 'Lusis', their debut). 'Lusis' has their most popular singles on it from back in 1991. They did hit the Christian Rock charts with 'Enfleshed (The Word Is Alive)' from that album.
One thing about Klank: they have stated that they aren't a 'Christian' band; much like Creed in this respect. However, they are still classifed under the Christian category, and search engines for Christian music will bring them up. This is possibly because they were signed to Tooth & Nail for their first album.
If you want something that isn't harsh, a very relaxing Electronic band is The Echoing Green. I can't remember where to get their albums now, except maybe a Christian bookstore like Bereans, but they used to be on MP3.com. I don't know if they are anymore.
Other than those bands, I could pretty much only suggest something like Skillet (I think you can probably see where my tastes in music are by now).
Mortal's "Fathom" was a foundational album for me...... 
