Depends. Most self described fundamentalists I know consider themselves Evangelicals. I would imagine most self described Evangelicals and Fundamentalists adhere to Sola Scrpiture. I know very lilttle about the oneness Pentacostals except that they deny the Trinity. It is a heretical, Arianist sect.
Oneness Pentecostals are not Arians. Arians (and those in their orbit) believe J*sus is a lesser being than the Father, a "demigod." Oneness Pentecostals believe there is only one person in the G-dhead and that J*sus is it; ie, when J*sus was on earth, heaven was vacant.
“Most self described fundamentalists I know consider themselves Evangelicals”
Being one of them “stupid sumbitchs”, I tend to disagree that Fundamentalists consider themselves Evangelicals. Fundamentalists split with the Evangelicals over “easy believism” in modern revivals and the anxious, self-conscious need of Evangelicals to be socially and intellectually acceptable to the Modernist intellectual elite. The core beliefs of the Fundamentalists were; The inerrancy of the Bible; the literal nature of the Biblical accounts, especially Jesus’ miracles, and the Creation; the Virgin Birth of Christ; the bodily resurrection and physical return of Christ; and the substitutionary atonement of Christ on the cross. Within the Fundamentalist movement some have also made Dispensationalism in all its various forms, KJV only, and either 4 or 4.5 or 5 point Solas as part of the core beliefs depending on which branch of the “stupid sumbitch” family to which one belongs.
Some Evangelicals may consider themselves “Fundamentalists” but I don’t know of any self respecting Fundamentalist who considers himself an Evangelical. He would lose the secret word and have to turn in his KJV for an NIV. If he was seen at a Billy Graham or Luis Palau rally he might have to settle for “The Message”.