I think you're looking for "smaller" languages that don't get a lot of attention? ie. not languages like Haskell, Scala, R, etc which have a small share despite being pretty well known.
One that I have seen popping up a lot is Elixir. I also know a lot of people who are super keen on Elm, although most aren't game to actually base their production systems on it (at work we use an Elm-style state system in Typescript).
I'm surprised how many people I know personally who like Python, particularly as a learning language, versus the industry's supposed apathy towards it. I've heard a few people tipping a bit of a Python resurgence due to its popularity in AI/ML/NLP and so on. We'll see, I guess.
I do think people under-estimate how valuable it is to learn scripting languages, particularly Shell/bash and its windows cousin Powershell (while available elsewhere, I'm yet to see PS really take off outside windows). So despite being ubiquitous, they don't get much attention.
Then you get HTML/CSS/JS, which all get attention - but most of it seems to be nonconstructive. So should we count that as "attention" at all? ;)