Rankers rhymes with:
anchor's, anchors, banker's, bankers, bankers', cankers, tankers, anchor's, anchors, banker's, bankers, bankers', bonkers, bunkers, cankers, clunkers, conquers, drinker's, drinkers, freethinkers, munkres, plunkers, spelunkers, stinkers, tankers, thinkers, tinker's, yonkers, younkers, younkers'
Rankers sounds like:
ranchers, rancorous, ranger's, rangers, rangers', reinsurers, rhinoceros, ringers