Bossuet
Bossuet, regarded as the greatest orator France has produced, was a fearless and inspired speaker. His style was dignified and deliberate, but as he warmed with his theme his thought took fire and he carried his hearers along upon a swiftly moving tide of impassioned eloquence. When he spoke from the text, "Be wise, therefore, O ye Kings! be instructed, ye judges of the earth!" the King himself was thrilled as with a religious terror.
To ripe scholarship Bossuet added a voice that was deep and sonorous, an imposing personality, and an animated style of gesture. Lamartine described his voice as "like that of the thunder in the clouds, or the organ in the cathedral."
Bourdaloue
Louis Bourdaloue, styled "the preacher of Kings, and the King of preachers," was a speaker of versatile powers. He could adapt his style to any audience, and "mechanics left their shops, merchants their business, and lawyers their court house" in order to hear him. His high personal character, simplicity of life, and clear and logical utterance combined to make him an accomplished orator.
Massillon
Massillon preached directly to the hearts of his hearers. He was of a deeply affectionate nature, hence his style was that of tender persuasiveness rather than of declamation. He had remarkable spiritual insight and knowledge of the human heart, and was himself deeply moved by the truths which he proclaimed to other men.