Stravinsky certainly had close ties to Paris in general and Debussy in particular, but I cannot imagine how his homage to Debussy, the Symphonies of Wind Instruments could be thought of as "impressionistic". Mussorgsky is often classed as a "realist", though this applies mainly to his operas.

Is Igor Stravinsky an expressionist or impressionist?

Other composers that have been associated with expressionism are Krenek (the Second Symphony), Paul Hindemith (The Young Maiden), Igor Stravinsky (Japanese Songs), Alexander Scriabin (late piano sonatas) (Adorno 2009, 275).

What is Igor Stravinsky musical style?

Stravinsky also composed primitivist, neo-classical and serial works. He wrote ensembles in a broad spectrum of classical forms, ranging from opera and symphonies to piano miniatures and works for jazz band.