Sequential rhymes with:
consequential, inconsequential, consequential, inconsequential, consequential, inconsequential, consequential, inconsequential, consequential, credential, deferential, existential, exponential, hentschel, inconsequential, influential, nonessential, preferential, presidential, providential, prudential, residential, reverential, tangential, torrential, vice-presidential
Sequential sounds like:
saintly, sandahl, sandal, sandall, sandalo, sandel, sandell, sandhill, santala, santella, santelli, santilli, santillo, santulli, scandal, scantily, schendel, schindel, schmidl, schoenthal, scintilla, secondly, sendawal, sentell, sentelle, sequentially, shindle, simental, smedley, smitley, smittle, smoothly, soundly, sundahl, sundell, sundial, swindall, swindell, swindle