Ohlsen rhymes with:
bolson, coalson, colson, dolson, folson, gholson, golson, holsten, joelson, jolson, molson, ohlson, ohlsson, olsen, olson, olsson, polson, toalson, tolson
Ohlsen sounds like:
ohlson, ohlsson, olajuwon, olesen, oleson, olexson, olguin, oligocene, ollison, olsen, olshan, olson, olsson