There are many other Protestant denominations that do not fit neatly into the mentioned branches, and are far smaller in membership. Some groups of individuals who hold basic Protestant tenets identify themselves simply as "Christians" or "born-again Christians". They typically distance themselves from the confessionalism and/or creedalism of other Christian communities by calling themselves "non-denominational" or "evangelical". Often founded by individual pastors, they have little affiliation with historic denominations.
How much affiliation do these small groups have with historical denominations?
little