Intervarsity, Cru, Navigators, Christian Challenge, etc. Here’s a list of all USC orgs:
https://campusactivities.usc.edu/files/2015/08/Clubs-and-Organizations-1-11-16.pdf
You can search “religious” on the document and go through each. There was a site where you could sort them out/filter the search, but I can’t seem to find it.
Every fellowship is different, so you kinda go through them all the first few weeks, trying to find the best fit. There’s a fellowship for everyone though. 