Humanists rhymes with:
feminists, abolitionists, antagonists, arsonists, chauvinists, communist's, communists, conservationists, exhibitionists, feminists, illusionist's, illusionists, jansenists, obstructionists, perfectionists, platonists, protagonists
Humanists sounds like:
hangouts, hanseatic, homeostasis, homeostatic, homestake, homestake's, homestead's, homesteads, homicides, honestok, humanistic