The reading with hamzah is a form IV imperative verb, addressed to the angels. The word āl is the object.

السَّاعَةُ أَدۡخِلُوا

This is a form I imperative addressed to Pharaoh's people, so āl is accusative as the vocative. NB: when joined to the previous word, this is pronounced: s-sāʿatu-dkhulū.

Abū Jaʿfar al-Madanī

Ibn ʿĀmir al-Shāmī

Nāfiʿ al-Madanī

Ḥamzah al-Zayyāt

Ibn Kathīr al-Makkī

Khalaf al-Bazzār

Abū ʿAmr al-Baṣrī

al-Kisāʾī

Yaʿqūb al-Ḥaḍramī

ʿĀṣim al-Kūfī

Ibn Wardan

Ibn Jammaz

Hishām

Ibn Dhakwān

Warsh

Qalun

Khalaf

Khallad

Al-Bazzi

Qunbul

Isḥaq

Idrīs

Ad-Duri

As-Susi

Abu al-Harith

Ruwais

Rawḥ

Shuʿbah

Ḥafṣ

ٱلنَّارُ يُعْرَضُونَ عَلَيْهَا غُدُوًّا وَعَشِيًّا ۖ وَيَوْمَ تَقُومُ ٱلسَّاعَةُ أَدْخِلُوٓا۟ ءَالَ فِرْعَوْنَ أَشَدَّ ٱلْعَذَابِ