Who is attributed for almost single-handedly creating the renaissance style of sculpture?

My answer is Donatello.  He studied classical techniques in sculpture as a basis for his style of sculpture that influenced art during the Renaissance.  He worked with various mediums such as wood, stone, bronze, stucco and wax. His famous work was a bronze statue of David.

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.