I asked this question a while ago Sola Scriptura to the max and was told that everyone believed Sola Scriptura to the point of excluding everything else. Today I was told I was not properly representing Sola Scriptura because I said trinitarianism and partialism are both not literally in the scripture and therefore fallible as concepts of men perhaps or perhaps not drawn from the scripture. Here: Is the Triune God Family?
Sola Scriptura does imply you accept some indirect inferences about the scripture but it does not make demands on which ones they are as far as I know.
Sola scriptura rejects any original infallible authority, other than the Bible. In this view, all secondary authority is derived from the authority of the Scriptures and is therefore subject to reform when compared to the teaching of the Bible. Church councils, preachers, biblical commentators, private revelation, or even a message allegedly from an angel or an apostle are not an original authority alongside the Bible in the sola scriptura approach.
I see no Sola Scriptura or Bible literalist requirement for being triniterian or partialist or thinking that either concepts are "authoritative". The Bible literalist combined with a Sola Scriptura believes the Bible and nothing else save select inferences. Is there some set of doctrins you must agree on to be Sola Scriptura and Bible literalist? I'm not asking about other groups or the majority of sola scriptura and the majority of Bible literalist.