naturalists (as a group) or naturalist (individual), promoting a closer connection with nature (lifestyle, food, etc.)

the Tōseiha (Control Faction); a totalitarian, militaristic and expansionist faction in the Japanese military during the early Shōwa era

futurism (art movement)

majority group (party, faction)

classicism

(Christianity) Adventists

a surname

a faction, a sect, a group that has branched off from a main group

extremist, radicals

pacifist / moderates