Is “evangelical protestantism” actually an official denomination, or are you using that term in the broader sense which includes all of non Catholicism?
No, it is not an official denomination, but rather, it is a term used to describe a number of Protestant denominations that support a certain set of beliefs and practices.
The National Association of Evangelicals has posted a Statement of Faith that sums up what evangelical Protestant churches believe. Here is a link to that Statement of Faith.
nae.net/about-us/statement-of-faith
The denominations that usually consider themselves evangelical are most Baptists, the Evangelical Free churches, Evangelical Covenant churches, the Assemblies of God and other Pentecostal churches, the Christian churches, Churches of Christ (not United Church of Christ), and Disciples of Christ, and many of the non-denominational fellowships and churches.
There are other groups of Protestants, e.g, the Mainline Protestants are the older denominations, and most of these do not consider themselves “evangelical.” These denominations include Lutherans, Methodists, Presbyterians, Reformed, Congregational, United Church of Christ, Episcopalians (and Anglicans).
Another group would be the Fundamentalist Protestant denominations. Many evangelical Protestant denominations accept the Five Basic Fundamentals of the Christian faith and so could be considered “Fundamentalists.” The difference is that Fundamentalist denominations are generally “separatist” that do not associate or cooperate with Christians outside of their denomination. Evangelicals do associate and cooperate with Christians outside of their denomination.
EVERYTHING that I have said above is a generalization and there are always, ALWAYS exceptions! There are Baptist denominations that are NOT evangelical! There are mainline denominations that ARE evangelical! There are Fundamentalist groups that are NOT separatists! etc. Please do not assume that my summary holds true in all situations, because it does NOT!
Also, I have left out quite a few Protestant groups, e.g., the various Pentecostal denominations other than the Assemblies of God. These denominations falls into all kinds of categories.
Also, I have left out the various ethnic Protestant denominations ,e.g., the various African American denominations. I have very little knowledge of these groups.
I have left out groups like the Friends (Quakers) and the Salvation Army, and the Mennonites. I am not sure where these groups place themselves.
I have left out the Seventh Day Adventists. This group is troublesome. Some Protestants consider it a cult, while others welcome them as a Christian group. I am not sure.
Finally, I have left out the groups that most Protestants consider “cults,’ including the LDS (Mormons), Jehovah’s Witnesses, Christian Scientist, and the Unitarians.” Sometimes I see these groups described as Protestant, but everything that I was taught growing up Protestant would say, “NO, these groups are NOT Protestant and they are not even Christian.”
I hope this is helpful to answering your question. It really has nothing to do with the topic, but perhaps it would help the OP to understand that Protestantism is much more complex than he/she apparently thinks it is.