Microsoft and Apple each have over twenty times more employees than Netflix. I've never understood why Netflix is included, in FAANG, etc.
FANG was coined to characterize a sliver of the stock market. It's all about the returns those stocks were producing over a period of time, and how they frequently traded together.
It has basically nothing to do with: revenues, profits, employees, products, technology.
It's at least 90% because it makes the acronym work.
A is not Amazon, it's Apple.
Amazon does not have the same technical hurdle as the others.