Hi Dave,
I think you've found the power of Catoire's composing idiom. In most of his repertoire that I've played, I can sense the influences of Tchaikovsky, Wagner, Faure, and Scriabin. But from your list, yes--Duparc and Ravel too, as examples, not the cool classical Ravel, but the Ravel of "Daphnis and Cloe". Catoire's parents, French citizens, moved to Moscow to set up a business there. Although Georgy Catoire was a natural born Russian citizen and the first-generation Russian of his family, there is no doubt in my mind that he was imbued with the great French traditions in literature, music and the arts. His parents would have certainly seen to that. In the same way that Victor Hugo appears in the "Chants du crepuscule", we can hear echoes of Faure's shifting tonal centers or even the great organ surges in the music of Charles Widor in the piano music of Catoire.
I believe it comes down to this: Catoire was a master ecletic in that not only did he draw on influences, but he could meld the styles of lush late romanticism, impressionism, and expressionism producing a unique idiom of his own. The effect is one of startling beauty. There is nothing superficial about Catoire's music. He is clearly a deep thinker, where much of his inspiration lies well below the surface. Although I analyze his scores of course, invariably I end up playing Catoire by instinct. To find Catoire, you will not discover him only in his musical notation; rather you must search for him between the lines. That is where the greatness of Catoire is to be found.
Thanks so much for your comment on my playing! You refer to the "dark struggle". Performing this piece is the like a harrowing struggle with a titanic force of nature, and I believe that only the amateur pianist can reveal the edge of that struggle to the listener. It soon becomes evident that it will be impossible for the pianist to prevail. He desperately hopes for a stalemate at least, so that the struggle can be rejoined another day.
David