@poozipotti 2 examples at opposite ends of the JAM spectrum:
http://www.netlify.com is a marketing site & blog which is all pre-rendered (then enhanced with JS to @algolia API for search)
http://app.netlify.com is a @reactjs app, served statically. With lots of client-side APIs for data.
My tweets and posts live here on my own domain these days.
You can explore them here and follow me on Mastodon instead of Twitter where I'm not currently active.