He he, I think you’ll get as many language suggestions as there are developers with their own preference 
Bringing in Erlang/Elixir. Not the biggest, most popular language but growing in popularity (e.g. by attractiveness of Phoenix LiveView for webapps). It is nice to have a reference impl. based on FP paradigm. And Erlang/OTP has a native actor model. The language is specifically designed for distributed, fault-tolerant applications (originating from Ericsson for use in telecoms applications).