Langguth rhymes with:
bayouth, carruth, caruth, damuth, eisenhuth, freiermuth, freimuth, freyermuth, gutermuth, homuth, jungbluth, kornbluth, lindemuth, lindenmuth, maryruth, rosenbluth, wasmuth, wildermuth, wohlgemuth, wolgemuth, wormuth
Langguth sounds like:
lamaist, lanai-city, lancet, lancit, lanctot, langseth, languid, languished, lanzet, launched, leanest, length, lengthy, leninist, linguist, linked, linquist, linscott, linseed, lionized, longed, longest, longitude, longshot, longuet, longwood, lunched, lunged, lynched