If you're designing a responsive website the likelihood is you'll be looking at everything from 320px all the way up to 1500px.

If you could group text styles under a breakpoint and somehow assign that to an artboard size, so when you add text to that artboard it automatically knows what size it should be.

ie You have a 320 typography folder. You copy and paste the h1 from the 320 to the 1280 artboard it would automatically resize.

The alternative being you set up your typography separately, looking at breakpoints the same way some CMS do. Assigning H1-H6, Body etc all teh wau up breakpoints inc line height and margins.