Populist rhymes with:
agriculturalist, analyst, beautifullest, capitalist, catalyst, conversationalist, evangelist, formalist, gentlest, herbalist, humblest, institutionalist, journalist, littlest, monopolist, nationalist, naturalist, neutralist, novelist, panelist, photojournalist, psychoanalyst, socialist, specialist, stablest, televangelist, ultranationalist
Populist sounds like:
palest, palisade, pelchat, philistia, pillaged, placate, placed, placeta, placid, placida, placido, placoid, plagued, plaisted, plaskett, pleased, plichta, plight, ploughed, plucked, plugged, polecat, policed, polished, polycast, pool-side, poolside, publicist, publicity, publicized, published