Langlais rhymes with:
aaa, allais, allay, ballet, blay, bley, boulais, boulay, cabriolet, calais, callais, chevrolet, clay, delay, display, filet, fillet, flay, imlay, klay, kley, lait, lay, laye, lei, ley, leyh, maclay, mcclay, mclay, millay, olay, overplay, palais, play, redisplay, replay, schley, slay, sleigh, souffle, underplay, valet, zalay
Langlais sounds like:
lanclos, langlois, linsey-woolsey, longleg, longlegs