I spent the last hour fruitlessly scouring internet searches for a list of just who those forty illustrious men are. As a consequence, I have concluded that clearly there is a need for this information to be available online, just in case I'm not the only one who worries about these things.
So here you are:
On the North Wall
St. Dominic Guzman; St. Peter of Verona; St. Thomas Aquinas; Blessed Jordan of Saxony; Blessed Raymond Penafort; Blessed John of Wildeshausen; Blessed Albert the Great; Blessed John of Vicenza (Giovanni da Schio); Blessed Isnard of Vicenza; Blessed Walter of Germany; Blessed Peter Sendre; Blessed Pelagrine of Spain; Blessed Bernard of Traversères; Blessed Vincent of Beauvais; Blessed Ambrose of Siena; Blessed Jacob of Venice; Blessed Augustine of Traü; Blessed Peter of Palu; Blessed Maurice of Hungary; Blessed Guido of Naples.
On the South Wall
Pope Innocent V; Pope Benedict XI; Cardinal Hugh of St. Cher; Cardinal Hannibald of Rome; Cardinal Peter of Tarantaise; Cardinal Robert Kilwardby; Cardinal Latino Malabranca; Cardinal Hugh Billom; Cardinal Nicholas Boccasino; Cardinal Nicholas of Prato; Cardinal Walter of England; Cardinal Nicholas of Fréauville; Cardinal Thomas of York; Cardinal William Macclesfeld; Cardinal Matthew Orsini; Cardinal William of Peter Godin; Cardinal Bonifacio of Donoratico; Cardinal Thomas; Cardinal Gerard of Domaro; Cardinal John of Moulins
The problem was, in the end, solved by finding a dissertation which had the information in it. Priscilla Susanna West, Text into art: The 'Chronica Dominicana' and Tomaso da Modena's Chapter House frescoes at San Nicolo in Treviso (Italy). (University of Oregon, 2002).