A lot of the great Graphic Designers in history, like Massimo Vignelli, Josef Müller-Brockmann, and Jacqueline Casey seem to have a specific style that I want to emulate for a project, and I'd like to have some sort of reference to use for the history, other designers, and other general information.
I've noticed that some common denominators include simple yet bold colour use (mostly the most basic forms of colours), heavy use of grid systems and geometric shapes, and simple typefaces (Helvetica, Garamond, Futura, etc...) used in unique ways.
A lot of these traits point to two styles in my opinion: Bauhaus and Brutalist. However, those two styles aren't quite able to accurately describe these styles. Here are some examples of what I'm looking for: