Speaking for myself, the language itself is simple. There aren't a lot of features, which means you do have to write more and it's more verbose, but learning the entirety of the language's features is very easy to do.

Even with the relative magic of things like init functions that execute on import, there's so much less magic that you have to consider.

IMO it's the easiest to jump into for this reason. Yes, the code itself might be excessive, but reading Go is as simple as can be.