I realize that you probably desperately want that to be tied together and true. It’s amazing isn’t it that so many were proclaimed saved during Jesus and the Apostles times long before any of the so called “creeds” were thought of?
The faith in the creeds was known and taught by Jesus and the Apostles before they were written in the councils. That’s what makes ‘em creeds.
The majority of non-Catholics have followed them since their beginning; others rephrase them in their own particular confession.
You’re welcome to have your own creed of course.
John 1:11-13 He came to his own, and his own people did not receive him. 12 But to all who did receive him, who believed in his name, he gave the right to become children of God, 13 who were born, not of blood nor of the will of the flesh nor of the will of man, but of God.
Acts 16:30-32 30 Then he brought them out and said, “Sirs, what must I do to be saved?” 31 And they said, “Believe in the Lord Jesus, and you will be saved, you and your household.” 32 And they spoke the word of the Lord to him and to all who were in his house.
Romans 10:8-12 8 But what does it say? “The word is near you, in your mouth and in your heart” (that is, the word of faith that we proclaim); 9 because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. 10 For with the heart one believes and is justified, and with the mouth one confesses and is saved. 11 For the Scripture says, “Everyone who believes in him will not be put to shame.” 12 For there is no distinction between Jew and Greek; for the same Lord is Lord of all, bestowing his riches on all who call on him.
Romans 10:17 So faith comes from hearing, and hearing through the word of Christ.