Though thousands of textual conjectures have been proposed by scholars over the last few centuries, today very few find any advocates. In the most widely used edition of the Greek New Testament (NA28), there are two places where the editors have left all the Greek manuscripts behind. These are Acts 16:12 and 2 Peter 3:10. In both places, there are a few versional witnesses in support of the adopted text.
John D. Meade & Peter J. Gurry, Scribes & Scripture: The Amazing Story of How We Got the Bible, 101.