Allison Bernstein is a stylist that has a good formula that’s done more for my closet than any other theory (colors only got me so far) - it’s identifying your style using just three words then shopping / wearing with those in mind. Read this article then you can watch some of her YouTube videos of styling people to this framework

https://www.wsj.com/style/fashion/allison-bornstein-styling-fashion-book-4a7106e0

I did i many years ago. Best money ever spent.