I really wanted to like Gleam because the Rust-like syntax and static types looked familiar and robust, but seeing how Lustre does HTML templating versus how Phoenix does Heex was my deciding factor to try the latter. My understanding is this is because of a current lack of any macro system.
I probably didn't give it a fair shake, but it all looks very early days, which isn't for me. Kind of a shame, because the dynamic types are still kind of driving me up the wall in Elixir. Elixir structs and dialyzer type specs feel so much worse than what statically typed languages provide.