Comment by mghackerlady

I can give a list of ones I'm studying CUA (87 and 91 versions) Awaita Breeze Material (primarily 3, but also 2 and 1) Apples HIG Microsofts HIG and Motifs HIG Some of these aren't technically HIGs and are rather "design-systems" but they all contain the commonality of trying to set up a consistent model for user-interaction in their environment