The best esolang I've seen in a while: all the keywords are business jargon!
https://github.com/rotoclone/strategic-communication
(Check out its policy on comments.)
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An esolang that exclusively uses characters and grammar from traditional Chinese! There are very few languages that are purely non-ASCII, it's interesting to see other examples in this space.
https://wy-lang.org/
(Great looking landing page too.)
A fun esolang I haven't seen before: expressing the entire program as a directory structure!