Idk if I’d consider anything written 75 years ago modern, but Carl Vine and Takashi Yoshimatsu have made some noise in this century
If you asked historians "when does modern history start" you'd get a range of dates from the Industrial Revolution to the end of WW2. And there's another thread with more pieces/composers: https://www.pianostreet.com/smf/index.php?topic=70692
Modern general history and modern music are two different things.IMO it’s weird to put someone who’s alive today who writes using electronics in the same time period as Shostakovich or Stravinsky lol