Autumn Ridge church in Rochester is an example of a Baptist church that rebranded itself as nondenominational. I grew up Catholic but mostly go to non-denominational now. SAT college test survey gives a check off for every religion on the face of the planet EXCEPT non-denominational or "other christian", so I checked off OTHER and guess what mail we got - nondenominational.
The most controversial religions are the evangelical christians, Mormons and Muslims. The Muslims had a survey that was largely ignored but showed them to be the mirror opposite image of Muslims in terms of being conservative, and other traits.