Sorry but I have heard a lot about Gleam for at least one year. Since they had a 1.0 release and ThePrimeTime [0] Youtube channel featured it (it has 175k views as of writing, for a new programming language video that's like a number 1 hit). They are being backed by fly.io and have an impressive number of sponsors[1].

[0] https://www.youtube.com/watch?v=9mfO821E7sE

[1] https://gleam.run/sponsor/