I don’t know that there is a list anywhere lining up scholars for or against any particular theory which Bart Ehrman may hold. I may be beating on the drum, but in the first chapter of The Case For Jesus, Brant notes that both on the level of an undergraduate degree and in working on his Masters in theology, he ran headlong into professors who buy into some or all of Bart’s theories. Brant states: "Needless to say, I was somewhat taken aback when the professor began by saying: ‘Forget everything you though you knew who wrote the Gospels. … In fact, we really don’t know who wrote the Gospels. Nowadays, modern scholars agree that the Gospels were originally anonymous’ "(pp. 1-2).
Further he says “I learned that many modern scholars believe that the Gospels are not biographies of Jesus, and that they were not authored by disciples of Jesus, and that they were written too late in the first century AD to be based on reliable eyewitness testimony.” (p 3).
As to your remark that “the majority of biblical scholars are believing Christians and they most assuredly do not agree with Ehrman”, since you are challenging others to prove a point, I would invite you likewise to prove your point.
Biblical scholars normally - like the rest of us - need to pay rent or a mortgage, buy groceries, and etc. and as a result, someone needs to employ them. While not all biblical scholars work in academia, I would suspect a large number of them do, and I will leave it to Pitre’s comment noted above - he is both a scholar and a professor, operates in the world of biblical scholarship, and I suspect he has a pretty good handle on the matters. He said “many”; he did not define that in a percentage, but I suspect it is far larger than you think.
As to whether or not individuals on either side of the debate are believing Christians, I will leave to others; I don’t think either you or I have a handle on that.