Mcnaught rhymes with:
naught, snot, ayotte, begot, brought, cadotte, caillebotte, distraught, faught, fought, fraught, gaut, guillotte, haught, haut, lamotte, laut, lezotte, lizotte, marcotte, marotte, maute, mayotte, naught, ot, ought, overbought, overwrought, picotte, pilotte, plaut, reshot, rethought, rought, sans-culottes, sicotte, snot, sot, sought, taught, taut, thought, traut, turcotte, vaught, vought, wat, wrought
Mcnaught sounds like:
machinist, macknight, magnesite, maximized, mcknight, mechanized, miscommunicate, mismanaged, misogynist