I don't put the effort into this that I thought I would. Regardless, I thought I would just say "out loud" that I think Elixir is going to be the language for me. After having gone through looking at Elixir, a tiny bit of Elm, Scala, and Haskell, Elixir is the one that sparked joy. Scala had its moments, as well.
So, to get back into the Elixir mindset, I decided to go through The Toy Robot. Once I get through that, well, I will likely work on a ray tracer, but may also do something with the mandelbrot set. We shall see.