Raiders' rhymes with:
graders, raider's, raiders, trader's, traders, traders', blockaders, crusaders, evaders, graders, invaders, nader's, raider's, raiders, trader's, traders, traders', waders
Raiders' sounds like:
radars, radiators, raider's, raiders, raters, rather's, reader's, readers, readers', reauthorize, redress, reeders, reiders, reiders', retiree's, retirees, retirees', retires, retrace, reuter's, reuters, reuters', reuters's, rhetoric, ridder's, rider's, riders, rieders, rieders', rioters, ritter's, roadwork, roderica, roderick, roderick's, rodrick, rodrigeuz, rodrigo, rodrigue, rodrigues, rodriguez, rodriguez's, rodriques, rodriquez, rooters, rothrock, rotors, rotruck, routers, ruder's, ryder's