Are al-Mu'in, al-Sattar, and al-'Aal among the Most Beautiful Names of Allah?

The name "Al-A'li" (the Most High) has not been authentically established for Allah Almighty, though its meaning is affirmed in the names "Al-A'liyy" (the Exalted) and "Al-Dhahir" (the Manifest). As for the name "Al-Mu'in" (the Helper), it has not been textually established among the names of Allah, but rather it has been narrated by some of the Salaf. And concerning "Al-Satir" (the Concealer/Coverer), its discussion has preceded.