Many years ago, very few founders did much blogging. Joel Spolsky was an obvious, high profile, exception and grew a huge audience. It's almost baked into the CEO/Founder's job description today that they will write about their entrepreneurial journey.
Mark Schuster - https://bothsidesofthetable.com/
Jason Cohen - https://blog.asmartbear.com/
Startups for the rest of us (podcast) - http://www.startupsfortherestofus.com/
The Startup Chat (podcast) https://thestartupchat.com/
Unbounce on marketing - https://unbounce.com/blog/
The Macro - http://blog.ycombinator.com/
There are several more technical ones like CSS-Tricks and API Evangelist
Anyone blogging on serverless with node?