Dario Fo is the most performed Italian playwright worldwide. I bought and read his
Manuale minimo dell'attore when I studied (at amateur level) acting many years ago. Quite a fascinating insight into the art of theatrical performing.
As for your suggestions, there is
Carlo Bo, scholar, translator and politician, founder of the
IULM and a main figure of literary criticism of the 20th century. The State University of Urbino, one of the most prestigious of the country, is named after him.