For that sort of compilation target more flexibility is beneficial, so C, Wasm, LLVM IR, Cranelift IR etc are better than Go, Nim, and D in my opinion.

> cross portability/small binaries/fast compiled language which is fast to compile

You don't need native compilation to build fast single file executables for a program, there's ways one can achieve this with Gleam today. Bundling the BEAM into your Gleam application executable with something like Gleepack is one option, and this will produce smaller executables than Go will by default for many applications.