I've been using solidjs (via solidstart) for awhile on a medium sized project.

> Portions of the react community are excited about how it's starting to feel more like PHP with the movement towards server actions in "client" code etc

Solidstart definitely pushes you to use their magic server functions. I used them at first - but increasingly I've been moving back to writing a normal, real REST interface on the server side. It still works fine, its just a few more lines of code to do it yourself. The biggest benefit is that I can control my HTTP verbs and headers. This lets me set up caching correctly, both in the browser and any intermediate caches.

> Things like Vue/Svelte where they mash together css and js in the same file if you want kind of turns me off.

Solidjs doesn't mash css and JS together. You usually use normal, real CSS or CSS modules. Eg:

    import styles from './style.module.css'

    function BannerComponent {
      return <div style={styles.bannerBar}>Banner</div>
    }