The correct answer to this open question is the following.
The Second Great Awakening leader that was known for his innovative preaching was Charles Finney.
Charles Finney (1792-1875) was the most famous American preacher during the Second Great Awakening. People loved. There was no one like him when he delivered speeches. He was considered to be a great orator that immediately captured people's attention with his voice and knowledge. He preached in New York, Philadelphia, and Massachusetts.