I really like the side by side comparison. I have an OSS UI component library that has all 3 of these and I still get tripped up on syntax even 25 components in :-)

I think state, reactivity, and hooks vs composition vs. actions would be a nice addition to this article.

In my opinion whichever of these you're coding in the most is easiest. Angular for me is hardest and much different from these three and has some drawbacks with the host elements being added, and the confusing templateOutletRef patterns, but it's also an unfair comparison as a more "batteries included" approach; so I see why you left it out.