[esterna]

There is one example that succeeded and became the most widely used programming paradigm on the planet: Spreadsheets

Though you might argue that the "programming language" part was rather accidental

[nylonstrung]

And interestingly using Excel resembles pure functional programming in a lot of ways

[esterna]

And it has array programming features, logging, and (time-travel!) debugging all intuitively graspable for most non-technical people.

I sincerely think there are lots of unlearned lessons in studying Excel.

[pjmlp]

And that is without counting on Lambdas, VBA, Power Query.

[ModernMech]

It’s reactive programming in a functional style. I wouldn’t call it functional reactive programming though because that’s usually used to describe more robust languages like older versions of Elm before TEA.