Phenomenally rhymes with:
nominally, nominally, criminally, nominally, terminally, additionally, conditionally, congressionally, constitutionally, conventionally, criminally, diagonally, educationally, exceptionally, fractionally, functionally, generationally, institutionally, intentionally, internationally, irrationally, marginally, medicinally, nationally, nominally, nutritionally, occasionally, operationally, originally, personally, professionally, proportionally, provisionally, rationally, regionally, rotationally, seasonally, terminally, traditionally, unconditionally, unconstitutionally, unintentionally
Phenomenally sounds like:
pamela, pamella, panel, panella, pannell, pannill, pannullo, penal, penile, penley, pennel, pennell, pennella, pennywell, penuel, penwell, phenol, phenomenal, pineal, pinelli, pinhole, pinnell, pinola, pommel, pownall, pumilia, pummel, pummill