Nextjs, TypeScript, Vercel, GraphQL, and Apollo - Nextgen Static Site Generation
First and foremost, TypeScript puts the super in superset, especially in a team environment. State management in React can be cumbersome, which is why I consider GraphQL and Apollo to be the dynamic duo. That said, Redux and Recoil each have their use-cases as well. As far as primary prebuilts are concerened, the "Next.js" framework is top-notch. It removes the otherwise tedious process of manually configuring Webpack to support a server-side rendering app from the equation. It saves time, streamlines optimization, and is blazing fast to enhane UX.