My top ten (there's a tie for number ten)
1. Eastern Orthodox (100%)
2. Roman Catholic (100%) <--
that's me 
3. Orthodox Judaism (93%)
4. Islam (87%)
5. Mainline - Conservative Christian Protestant (85%)
6. Orthodox Quaker (82%)
7. Church of Jesus Christ of Latter-Day Saints (Mormons) (82%)
8. Seventh Day Adventist (81%)
9. Sikhism (79%)
10. Bahá'í Faith (73%)
10. Jehovah's Witness (73%) <-- never would have guessed.