True Christians differ non-essential doctrines. While these doctrines can separate (e.g. denominations), they should never be used to cause division.
Salvation
Order of Salvation (ordo salutis)
Total or partial depravity
Unlimited vs limited free will
Unlimited vs limited atonement
Eternal security
Water baptism
Sprinkling, pouring or immersion
Infant vs. “believer”
Spiritual gifts
All still active including sign gifts
Some still active (no sign gifts)
None still active
Communion
Trans/con-substantiation
Real presence
Memorial
Giving
10% tithe mandatory (gross vs net income)
No mandatory giving level
Leadership
Strict or open succession
Women pastors, teachers, and/or deacons
Eschatology
Dispensational Premillennial (pre, mid, post tribulation)
Historic Premillennial
Amillennial
Postmillennial
This post is not intended to be a place to debate these individual topics. There are plenty of other posts for that. It is only intended to discuss whether or not these are non-essential doctrines. Feel free to add any doctrines (not practices) that I might have missed.