I love Mithril. I would encourage every React/Vue developer to try it for a small project. Not to convince them to switch (I use all 3), but because I think using tools designed by smart people with a minimal mindset is valuable. Also I really like the hyperscript approach. It just fits my brain.
Last I checked, Mithril hyperscript couldn't handle SVG, which is a non-starter for dataviz work. Anyone know if that's still the case?