The Titanic had three classes based on socioeconomic status:
* First Class: Wealthy passengers who enjoyed the most luxurious accommodations.
* Second Class: Middle-class passengers with comfortable but less lavish facilities.
* Third Class: Working-class passengers with more basic accommodations and shared spaces.
While religious affiliations undoubtedly existed among the passengers, they weren't a defining factor in their social class on the ship.
To answer your question, there was no dominant religion among the three classes on the Titanic. Passengers came from various religious backgrounds, reflecting the diversity of the time.
If you're interested in exploring the religious affiliations of Titanic passengers, you could delve into the historical records and passenger lists.