On a mac there is a tool called 'voice control' which can trigger custom 'commands' or keyboard shortucts. You can use it to trigger shortcuts in any IDE. So if your IDE supports custom shortcuts for templating you're away.
Indeed. And I really don't get why this has been downvoted. Yes, the OP wrote he didn't like a command driven approach. But thats on windows, which comes with its own problems, see e.g., https://news.ycombinator.com/item?id=23507363 .
Voice Control is much worse than WSR at this task, not for accuracy reasons, but for API and extensibility reasons. (I went above and beyond to try to make it work, the underlying APIs crash and/or hang if you try to load in large grammars, too much custom vocab, or repeatable commands). In Voice Control you can basically only define simple commands that require pauses, and there's no way to build a system for something like spelling words or inserting specific special characters without requiring a large. pause. between. every. single. thing. you. say.