Addy Osmani's tweets are focussed on improving the webpage's performance. He also tweets about new features in browsers and occasionally does PWA case studies.
Steve Schoger tweets about design and tailwind CSS. You should also look at his Youtube channel where he tries to make site's design better
Evan you is the creator of the very admired framework Vue.js. Currently, he is also working on a better bundler Vite.
Sarah Edo tweet about vue.js, SVG, and animations. She is in the core vue.js team and VP of developer experience at Netlify.
Guillermo Rauch is the CEO of vercel (formally Zeit). He tweets about Next.js, React.js, and Server-side rendering.
Reactjs is the official twitter account of React.js. Tweets include new react.js features.
Vuejs is the official twitter account of vuejs. Tweets include new vue.js releases.
Julia Evans tweets about easy explanation to CS-related things.
Adam Watham is the creator of tailwind css. He tweets about tailwind, CSS, Laravel, and other design-related things.
Cory House helps companies transition to react.js. His tweet includes React.js and occasionally he writes book reviews.
Rich Harris tweets about the modern web (SPA and frontend tooling), and svelte.js.
wesbos's youtube channel has over 100 thousand subscribers probably because he uploads videos of his free tutorials there. He also uploads some quick explainer topics on youtube.
Leveluptuts is run by Scott tolinski. He constantly adds new content related to web development including React.js Svelte.js and react spring animations. A lot of his content is paid which is on his site but still lots of good content.
Full stack radio: is hosted by Adam watham. He regularly interviews famous people in web dev space.
Syntax.fm is hosted by Scott tolinksi and wesbos, it is not an interview podcast. Mostly these 2 people talk about new things happening in webdev and classic questions in this space.
Ananya Neogi write about things that can be achieved using vanilla HTML, CSS.
Jacob Herrington posts about easy explanations, tips, and tricks, along with some discussion posts.
Vaidehi Joshi is famous for his BaseCS series. she posts about underlying computer concepts like trees, searching, distributed computing, graph.
If you are interested in things related to computers in general, which don't quite fit in web dev space then here are few other resources for you.
Computerphile youtube channel adds new videos regularly about computer science topics. their recent upload includes GPT 3, AI-related things, XSS issues, SQL injection.
Liveoverflow is a channel for pentesting and hacking its upload includes crazy XSS attacks, CTFs, and other common security-related things.
Game makers toolkit or GMTK (for short) is a youtube channel about understanding game mechanics, and game reviews (they are not that common)