Where can I find books / references / inspirations to learn the principles behind these graphic patterns?
It's often seen in luxury or heritage style products, as well as the us dollar sign. What is the art or graphic design style called? I understand that this may be a mix of various styles, but is there an overlapping or overall name for this art style?
Specific examples include Simon Frouw's work as they all seem to fall under this category:
Looking at them they just look elegant and old-school luxurious with all the intricate details that looks hand crafted. From looking at the various examples I gathered there seems to be elements or art deco geometric patterns, halftone engravings styles, monograms, and heritage crests
I'm probably the most interested in the beautiful decorative geometric & illustrative or graphic design patterns as seen in the background.
What's the principle behind these designs? What's it called and where can I learn to make them?