Why is Constantine not a widely renowned Christian figure?

[now faith]

And created the canon. the unification of Christian thought into one body of knowledge began with him.

It's simply a point of contention that the RCC claims to be the originator of the universal doctrine, but they are not.

So the cross had nothing to do with one body , or the apostles should have had his guidance in proclaiming the gosple 300 years before. He must have had help from Apollo and Diana to claim bringing Christian thought into one body of knowlage, since there is no mention of the Holy Spirit having anything to do with this knowlage of Christianity.