As Oneness Pentecostals hold to this salvation by grace and that Jesus Christ is God, they are Evangelicals
The term Evangelical includes diverse points of view with really the only common point being the salvation by grace (since most don't hold to creeds).
That’s not the classic definition where I am from, since the Trinity is essential to being a Christian, let alone being an evangelical.
I read last week that the term “evangelical” was a term invented in the 50s or 60s to somehow pigeonhole, divide, and separate Christians. Before that time no one ever used the term, and most Christians never even mulled the concept.
The term was invented by leftists who hated Christianity.
Sorta like how the term “Capitalism” was invented by Marx when there was already a valid descriptor known as “the free market”.
Actually, most evangelicals DO hold to creeds, though some not officially. Baptists & other generic evangelicals can easily agree to all points of the Apostles or Nicene Creeds—even if they don’t recite them in worship, or claim to abide by them. As such, evangelicals are ALL trinitarian—and do not include people like oneness Pentecostals.
Justification by grace alone is not the only thing evangelicals hold in common.