That's all over the map, but you've got several major songwriters contributing to the setlists. Most church bands are essentially cover bands, attempting to precisely do songs by these artists / churches. Clicks and IEMs are extremely common, as is throwing in backing tracks for instruments that are missing from the line-up. Those are side effects of relying on mainly volunteer musicians.
In any case, songs by:
- Hillsong United, Hillsong Young and Free, Hillsong Worship, etc (all the Australian folks)
- Chris Tomlin, Matt Redman, Charlie Hall, David Crowder, Kristian Stanfill, and the other Passion Conference folks
- Bethel / Jesus Culture
- several other Christian artists and mega churches
So for example, a couple weeks ago we did:
- Oceans (Hillsong United)
- Relentless (Hillsong United)
- Break Every Chain (originally by Will Reagan but we did The Digital Age version)
- Cornerstone (Hillsong Live)
One interesting thing has been being able to watch the worship gear tastes evolve and develop into a very particular boutique diet these days. 10 years ago, everyone was using PODs or a string of Boss/Ibanez pedals (I'm talking across hundreds of churches I know of, not one in particular). These days, you'll see Morgans, Dr Z, vintage Fenders, and giant pedalboards (with 10 boutique drive stages) that put the Edge's rig to shame. Keys are the same story - any workstation used to cut it, but now everyone has to have a Nord Stage 2 and a sidecar with a full Mainstage/Omnisphere setup. So not terribly different from the professional gigging scene.