Is it permissible to continue supplicating to Allah for guidance to the correct creed, and is this supplication considered a doubt in one's current creed, especially with the existence of disputed creedal hadiths that cause unease?

Delving into the intricate details of creed that scholars have differed upon harms a Muslim, because the primary objective of creed is to believe in the six pillars of faith in general. Anything beyond that, such as the detailed elaborations of scholars, is not obligatory to believe in or delve into, and is considered secondary. The Prophet (peace be upon him) warned against argumentation, and Shaykh al-Islam Ibn Taymiyyah did not extensively discuss the chapters of Names and Attributes before the general public, because religion is built upon the agreed-upon fundamentals among Muslims. The advice is for a Muslim to bypass what seems ambiguous to them and to recite the prophetic supplication: "O Allah, Lord of Gabriel, Michael, and Israfil..." As for matters of dispute, there is no blame upon him if he does not believe in them, and his heart should be like a solid glass, not like a sponge that absorbs doubts.