Who are the God-fearing (muttaqīn) mentioned in this āyah?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

1. It is general to all who have fear of Allah until the Day of Judgment. [Ibn ʿAbbās]
2. It refers to the nation of Muḥammad (ﷺ). [Al-Suddī, ʿAṭiyyah, Sufyān]