This was subsequently interpreted and expounded by a number of clerical authors like Molanus, who demanded that paintings and sculptures in church contexts should depict their subjects clearly and powerfully, and with decorum, without the stylistic airs of Mannerism. This return toward a populist conception of the function of ecclesiastical art is seen by many art historians as driving the innovations of Caravaggio and the Carracci brothers, all of whom were working (and competing for commissions) in Rome around 1600, although unlike the Carracci, Caravaggio persistently was criticised for lack of decorum in his work. However, although religious painting, history painting, allegories, and portraits were still considered the most noble subjects, landscape, still life, and genre scenes were also becoming more common in Catholic countries, and were the main genres in Protestant ones.