In the type classif. system published by Bringhurst in Elements and his article in Serif #1, “Grotesque” faces like Helvetica, Univers and Akzidenz fall under “Realist Roman”. It seems one of the characteristics of Realists is small aperture (don’t know if that’s the correct english term, sorry), but faces such Frutiger have a very large aperture, and while they are monoline sans I feel they are different design concept than “grotesques”.
I’d like to know how other people feel about this. Are Helvetica and Frutiger to be in the same “package” (as has been in other type classification systems) or does the latter need another “compartment”, along with other similarly open/legible/signage-oriented sans?