Marchenko rhymes with:
giovenco, ivanyenko, lourenco, norenko, renco, alanco, bairnco, barranco, capobianco, carranco, defranco, delbianco, difranco, evancho, gianfranco, giovenco, hybrienko, ivanko, ivanyenko, lobianco, lourenco, norenco, norenko, panebianco, polanco, renco, ronco, runko, sancho
Marchenko sounds like:
mannerisms, marching, marchinko, marchioness, marcinek, marciniak, marcinko, marcinkowski, marcinkus, margining, margins, markham's, marking, markings, markunas, memorizing, merging, morgan's, morgans, moroccans, morricone's, morrison's, mrozinski