Hanafis treat Quranic recitation itself as fard, with reciting al-Fatihah specifically as wajib under their evidentiary distinction between these categories.
Al-Shafi‘i treats al-Fatihah as a required pillar and cites the hadith, “There is no prayer for one who does not recite the Opening of the Book,” as evidence for its indispensability. Both value al-Fatihah but assign different consequences to its omission.