TLDR, I moved from WordPress to Jekyll, then to Hexo, with WordPress still working as a CMS.
I use KaTeX in VSCode extension Markdown All in One for notes and homework. It's by far the easiest and most flexible way.
Markdown is such a markup language (see the paradox? lol) without a widely-accepted, strong official organization regularizing its syntax and grammar. Typical standards includes:
In an attempt to use the same syntax and grammar throughout my Markdown documents, i.e KaTeX with VSCode, Jekyll, and WordPress Markdown, and considering the possible transplantation to LaTeX, I adopt the following configuration for most consistent experience.