Beliefnet results
These are my beliefnet.com results:
1. Church of Jesus Christ of Latter-Day Saints (Mormons) (100%)
2. Jehovah’s Witness (100%)
3. Mainline to Liberal Christian Protestants (91%)
4. Liberal Quakers (85%)
5. Reform Judaism (85%)
6. Orthodox Quaker (85%)
7. Sikhism (83%)
8. Mainline to Conservative Christian/Protestant (82%)
9. Orthodox Judaism (82%)
10. Unitarian Universalism (79%)
11. Bahá’í Faith (79%)
12. Neo-Pagan (70%)
13. Christian Science (Church of Christ, Scientist) (68%)
14. New Thought (68%)
15. Mahayana Buddhism (66%)
16. Seventh Day Adventist (65%)
17. Theravada Buddhism (64%)
18. Islam (63%)
19. New Age (63%)
20. Eastern Orthodox (60%)
21. Roman Catholic (60%)
22. Scientology (60%)
23. Jainism (57%)
24. Hinduism (52%)
25. Secular Humanism (47%)
26. Taoism (35%)
27. Nontheist (20%)
As you can see, It’s a tie between Mormons and Jehovah’s witnesses