Nevertheless, to the degree that we have already attained,  let us walk by the same rule, let us be of the same mind. (Philippians 3:16, NKJV)
Honestly, none of us, even Paul, is perfect and possess all the knowledge and understanding of God. In the body of Christ, either universal or local, some differences to how we live before God occur. They are all OK before God. Thus we cannot say that some possess the best way of life before God than others. For example, in a family with 3 kids, each of them may have unique relationships with their father. And the father is OK with that; he knows each one as his kid uniquely.

Some of us experience certain kind of way of life that makes us different from others. Some also have gone through difficulties, hardships, comfort, or happiness. We are all different in nature and unique before God. We are all possessing uniquely different understanding of God. As long as it aligns with the words of God, support them to narrow the gap of understanding between us.

Some relate to God as sons, some servants, some darling, some friends. By saying that, I mean that some people may relate to God mostly with certain kind of attribute. For example, although I also call God as Father, most of the time I relate to Him as servant to the Master. Some call father most and so on.

In a diverse array of body of Christ, we should maintain the understanding as Paul possessed. If some think that they are mature and knowledgeable, let them be wise and not judge the young Christians. Put it on Gods hands when to reveal the revelation they know as truth. Do not be too pushy. Be wise and give God time to help our brothers mature.  Then we will see harmony living as brothers and sisters.