But the Holy Spirit leads only as we submit and therefore, indeed, people and churches of different nature and nurture will have differences in doctrine.
The twelve who were chosen by Jesus were quite different individuals and had disputes amongst themselves (Acts 15). Likewise, the churches in Revelation 2 and 3 are quite different and yet all accepted with commendations and rebukes. Nevertheless, the core belief in Jesus Christ is the same (1 John 4).
Jesus could have chosen twelve disciples like Peter, but He did not. He could have rejected all churches but Ephesus, but He did not.
From all of this I conclude that it is ok if one wants to be like Paul and another like Peter and another like John, etc. It is ok for a church to be like Ephesus, Thyatira or Philadelphia, etc. It is ok to be Calvinist or Arminian or Catholic or Eastern Orthodox or whatever - as long as the core belief remains.
As for me, I'd rather be like John and the church of Philadelphia and eschew all doctrine labels.