Winnebago's rhymes with:
argo's, bigos, burgos, congo's, domingos, egos, embargoes, flamingos, frangos, galapagos, gallegos, gringos, hugo's, mangoes, panagos, provigo's, rengo's, tangos, tragos, yugo's
Winnebago's sounds like:
wambach, wambaugh, wannabees, wannabes, weinbach, wimbish, wimbush, wimps, winbush, winnebago, winnipeg