Rapson rhymes with:
papson, dopson, empson, epson, gipson, hampson, hopson, impson, ipsen, jeppson, jepsen, jepson, jipson, kempson, lampson, lipson, papson, philipson, phillipson, rhodopsin, sampson, simpson, stimpson, sympson, thompsen, thompson, timpson, tompson, upson
Rapson sounds like:
rabkin, rapkin, repossession, revision, revson, revzin, rifkin, riphagen, ripken, ripkin, rivkin, robeson, robison, robson, rubicam, rubicon