The author noted that Solid is very similar to React but with a simpler mental model. This has been my experience as well. And its faster too.
I particularly like that (JSX aside) it's just JavaScript, not a separate language with its own compiler like Svelte (and by the sounds of it Marko, which I hadn't heard of before). You can split your app into JS modules, and those can all use Solid signals, even the internal bits that don't have their own UI.