“One” can be used as a pronoun to refer to either the quantity 1 (numerical), or to unspecified people in general (indefinite). In a similar way, none or no one is used to indicate that there are no such things. None is usually used in the numerical sense. No one is usually preferred for the indefinite sense, although none is also possible here.
A few of the artefacts examined in the analysis are of stone, but none are the size of rune stones. (numerical)
A few people were late, but no one / none left early. (indefinite)