Ion rhymes with:
brian, brion, bryan, bryen, bryon, cryan, dian, dion, ghanaian, guyon, hawaiian, hyun, ixion, lion, lyon, mayan, mcbrien, mion, nvryan, o'brian, o'bryan, obrian, obryan, olayan, orion, paraguayan, rion, ryan, ryen, ryon, scion, tryon, wian, wion, zeien, zion
Ion 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, iona, ione, iowan, iwan, iwen