Grayling rhymes with:
derailing, railing, trailing, ailing, assailing, ayling, bailing, baling, curtailing, derailing, detailing, emailing, entailing, failing, flailing, hailing, impaling, inhaling, jailing, mailing, nailing, prevailing, railing, regaling, sailing, saling, scaling, surveilling, tailing, trailing, unavailing, unfailing, unveiling, veiling, wailing, whaling
Grayling sounds like:
garling, garlinghouse, gerling, grilling, growling, grueling