utopists

/ˈjuːtəpɪsts/
noun
  1. People who believe in or advocate for an ideal, perfect society, often seen as unrealistic.
    • Utopists have imagined everything from peaceful communes to high-tech paradises.
    • The conference brought together utopists and realists to debate the future of cities.
    • Many early utopists were inspired by the writings of Thomas More.