I use Etch (https://etch.blog) - a personal blogging platform with a built-in newsletter, custom domains and SSL, and no ads or popups.
I was self-hosting but got sick of dealing with it and founded Etch ;)
I write on a simple static Hugo blog running on GitHub pages. I found that anything else makes tinkering too easy, which distracts me from the goal of writing. Writing often is hard enough, and I definitely don't need anything else getting in the way!
Platform: https://epiphany.pub/@shi-yan/introduction
Dynamic,
I made the platform myself ...
Dynamic, hosted on Epiphany. It's the best dev platform I've found.
I mostly rant about data engineering adjacent topics.
It's on managed hosting at Kinsta.
Occasionally contribute to writing/proofreading
I use Jekyll, hosted on Netlify.