What is the most accurate opinion of the scholars regarding the permissibility of the niqab, and who are the scholars and exegetes who said it is obligatory and who said it is not obligatory?

The obligation for a woman to cover her face is a matter of considerable scholarly disagreement, and many books have been written on this topic, such as: Adillat al-Hijab (Proofs of the Hijab) by Muhammad ibn Isma'il al-Muqaddam, Ibraz al-Haqq wa al-Sawab fi Mas'alat al-Sufur wa al-Hijab (Clarifying Truth and Correctness on the Issue of Unveiling and Hijab) by Safiur Rahman Mubarakpuri, Fasl al-Khitab fi Mas'alat al-Hijab wa al-Niqab (The Decisive Word on the Issue of Hijab and Niqab) by Darwish Mustafa Hassan, and Al-Isti'ab fima Qila fi al-Hijab (Comprehension of What Has Been Said Regarding Hijab) by Furaih al-Bahlaal.