Are Al-Kafil and Al-Mun'im among the established names of Allah?

"Al-Kafil" (The Guarantor/Sponsor) is mentioned with the meaning of agent and guarantor, but it is not explicitly mentioned as a defined name in the Qur'an or authentic Sunnah. However, some scholars, such as Ibn Mandah and Al-Bayhaqi, have counted it among the Most Beautiful Names of Allah. It signifies the One who undertakes the guarantee of provisions and the fulfillment of promises related to deeds. As for "Al-Mun'im" (The Bestower of Blessings), it has appeared in verbal form in the Qur'an, and some scholars, such as Ja'far al-Sadiq and Ibn Mandah, have mentioned it as one of Allah's Most Beautiful Names, despite scholarly disagreement regarding its establishment as a name. Nevertheless, the discussion of "thanking Al-Mun'im" is widespread and accepted, and it is permissible to be named "Abd al-Mun'im" (Servant of the Bestower of Blessings) because there is no doubt that Allah Almighty is intended.