You will find this at the beginning of a sentence only immediately before the author focuses attention on one or more of those methods as the subject of the following clause, e.g. "Of all the above methods, the Schartz-Metterklume method is clearly the best."
More generally, the construction is "of [ENUMERATED SET], MEMBER[S]" ... it does not require "all", but in some cases the use of "all" helps to clarify. For instance "The first three of these methods are fairly effective, but of all it is the fourth, the Schartz-Metterklume method, which is clearly the best."
And the phrase need not come at the beginning: "The Schartz-Metterklume method, of all those named, is clearly the best."
And, yes, it is entirely suitable for scientific papers as long as you deploy it correctly.