By no means. In review, as evidenced , Scripture was the supreme transcendent standard for obedience and testing truth claims, and it was upon Scriptural substantiation in word and in power that the Lord and His apostles established their claims.
The sufficiency of Scripture is no simply formal, and which is limited, but material, and provided for additional writings being recognized as Scripture, by conformity to it in quality and content.
And it was the Scriptures not tradition, that the Lord opened the confused disciples mind to. (Lk. 24:44)
Yet as Scripture says that we yet see thru a glass, darkly, due to poor reception, then due to this and other factors comprehensive doctrinal unity was never realized, but based upon this is what Scriptural unity there was and is. The fact that Scripture is misused or misunderstood does not negate its efficacy and supreme authority, as more than the misuse of miracles negates them.
The alternative is sola ecclesia, which also fails to produce comprehensive doctrinal unity. Rome's infallible teaching is quite limited, and no one can give you an infallible list of all infallible teachings. And even if they are infallible, that does not prevent them being misused and misunderstood.
And the most egregious errors and effects are seen under sola ecclesia.
Both SS and SE can produce degrees of unity, but the kind of unity that the church began on was under Scripture as supreme.
There is a doctrine sola scriptura that is named, held and adhered to by reform churches. There is no doctrine sola ecclesia. I see this as an another mole popping up. :)
The question under discussion is: Is there unity of doctrine among the sola scriptura adherents whether they be churches or individuals? I cannot imagine a positive reply to this question.
thanks for your reply.