Yes, same here. Hate JSX/TSX. Would love to have choice of templating engine so can stick to pure HTML/CSS as much as possible. I still prefer simple template engines like Mustache which respect HTML.
You might dig Joystick https://github.com/cheatcode/joystick. Takes the compositional aspects of JSX/React but uses a very thin abstraction over vanilla HTML/CSS/JS to do it.
Joystick is full-stack (UI framework directly integrated with a Node.js back-end framework) but the UI part can be used on its own.