Iona rhymes with:
alzona, ancona, anona, aragona, arizona, azcona, barahona, barcelona, bivona, bona, cappadona, caradonna, cardona, carmona, celona, colonna, cona, corona, cutrona, daddona, daytona, debona, deltona, desmona, dibona, dimona, diona, doanna, dona, escalona, fiona, friona, gaona, iacona, idona, ilona, jonah, katona, kimono, kona, korona, krona, krone, latona, lona, mokoena, mona, oana, orona, pamplona, perona, persona, platona, pomona, ragona, ramona, ricadonna, roanna, rona, sagona, savona, sedona, shemona, shona, simona, sindona, varona, verona, vivona, vona, wrona, wynona, yona, zona
Iona sounds like:
i'm, iain, ian, ianni, iannone, ihnen, im, imai, imam, iman, imm, immu, immune, immuno, imo, in, in., ina, inane, inhuman, inhumane, inman, inmon, inn, inno, inoue, inouye, iny, ion, ione, iowan, iwan, iwen