I have the Logitech Harmony Ultimate in my primary home which does NOT contain hubitat. It works pretty well, but that specific model's touchscreen is a bit too laggy for my taste, and I have no experience with the replacement, the Elite model, so it is unknown if that model's touchscreen is any better. They also have cheaper models if touchscreen is not your thing.
@ogiewon may know better how this system communicates with Hubitat specifically given he released this driver:
