Lupton rhymes with:
gupton, upton, brampton, campton, captain, clapton, clopton, compton, crampton, crompton, crumpton, cumpton, frampton, gupton, hampton, hopton, kapton, kempton, kimpton, knapton, lampton, lipton, northampton, plimpton, plympton, sharpton, shipton, skipton, southampton, tipton, upton, westhampton
Lupton sounds like:
labaton, lefton, leptin, leviathan, levitan, levitation, leviton, levittown, lifetime, liftin, lifton, lilliputian, lipton, lobotomy, loftin, lofton, lopatin