Isch rhymes with:
bisch, bish, blish, commish, demisch, disch, dish, fisch, fish, frisch, gish, ish, kisch, kish, klish, krisch, ladish, lish, mcclish, mclish, mcnish, misch, mish, risch, rish, swish, tisch, tish, trish, wisch, wish, wisz
Isch sounds like:
i's, i.'s, i.s, iacocca, iacocca's, iago, ice, ices, ich, ichi, ichikawa, ickes, ickes', icy, iezzi, ige, igo, igoe, igou, igushi, ihasz, ijaz, ikaes, ike, ike's, ikea, ikeuchi, ikey, ikie, ios, iosue, iowa's, is, isa, isaac, isaacks, isaacs, isaak, isaiah, isay, ischo, ise, ish, ishaq, ishee, ishi, ishi's, ishii, ishikawa, isis, issa, issac, issah, issie, issue, issue's, issues, issues', issy, isu, isuzu, iwaki, iwasaki, iwosaki, izzi, izzo, izzy, izzy's