I'd class this website as good if you want to make a visual impact, but giving subtly bad advice if you want to visualise data.

Looking at the selection for proportions [0] there are things like circle packing or bubble maps presented as options. These are terrible ways to encode visual data if the intent is for the audience to actually take an interest in the data itself. Humans are really bad at interpreting the relative size of areas, especially circles. They really only make sense if the intent is to wow the audience that you have data and design skills, then everyone moves on without asking tough questions. Fair enough, sometimes that is the right thing to do, but it isn't a good way to visualise data. Use bars.

[0] https://datavizcatalogue.com/search/proportions.html

I came across another one a while back I wish I had bookmarked, it was old style html just from a greybeard dataviz expert, and it was basically an exhaustive description of what to use in what situations, and it was chock full of advice that was both counterintuitive and obvious in hindsight... what was great about it is it focused on the data type first, and only recommended the viz styles at the end.

Ads were way too aggressive on iOS, pop up videos interfered with the use. I have a genuine interest in the topic but the ads just made my trust dissipate under a minute.

Good potential, appreciate the organization of topics but not the ads and clickbait stuff.

What would you recommend for a series of events over time, where events can also link to other events?

Similar to a graph of nodes with a time component.

I have been scratching my head around this visualization problem it has been some time, and still haven’t found anything that would be applicable

Would love to see less ads on this.

Not seeing an UpSet plot?