yes they are
Raphael is a Italian renaissance artist and is known for his madonnas.
Michelangelo is an painter, sculptor, architect and poet. He is an Italian sculptor.
Leonardo da Vinci was an Italian polymath of the Renaissance who was interested in invention, drawing, painting, sculpture, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, paleontology, and cartograph. He is mainly known for his painting the Mona Lisa.
An example of an instance in your life where you may have got a new idea while practicing creativity is creating art. While creating an art piece, whether it be an illustration or graphic design, many creative choices rush into your heading allowing for endless new ideas. These practice creativity in many ways, and help showcase your new ideas.