UPDATE: To clarify more regarding the meaning behind the term "worship music," genre should not be a factor. Going back to King David, when he wrote the psalms from the overflow of his heart, he also wrote according to his culture. Same applies here. When songwriters write worship music from the overflow of their moments with God, they also write from their culture. So if your culture is jazz, write worship music in the jazz culture. So, feel free to write songs in the music culture you're currently in. Don't worry about trying to sound like Christian radio or the well-known worship artists. In many cases, culture plays a big role in music.
We'd still love to hear from you! So, please provide some feedback so the group will grow according to the needs of the group. Blessings!