What people need on a UI Kit/Design System for e-commerce?

Hi!
I'm a graphic designer/front end developer and my job on last few years is create ecommerce sites on VTex platform. At moment, Im' trying to create a ui kit/design system to use at work and I wanna listen what did you expect from a ui kit besides the basic components or how many variations of a component you think would be great to start wtih..