[thoradam]

> the decision not to include various MLs, OCaml, Scala, or F# in the chart of functional languages seems controversial

I don't know why that would be controversial. There's a very clear distinction between (MLs, OCaml, Scala, F#) and (Haskell, Elm, PureScript, etc.).

[anfelor]

Sure, they are in different language families. But a chart showing the "top dozen functional-programming languages" should include all languages that were given a separate workshop at the International Conference on Functional Programming (https://icfp22.sigplan.org/): Haskell, ML, OCaml, Scheme, Erlang, miniKanren (the last two are arguably specialised enough that they could be excluded to put more focus on general-purpose languages).