I don't use the SmartHome skill. I use the ISY skill and I can control anything that is controllable from my ISY994i, whether it be scenes, devices or programs. This include thermostats, MiLights LED strips, LEDenet controllers, blinds, doorbells, notifications etc. The ISY Portal has a vocal to action table that allows me to use whatever words I want for whatever unit I want. This shows the complete list of controllable units.
ISY is actually HA while SmartHome is basically just remote control. Big difference in function.
Somebody has worked out a way to get programmed responses through the Alexa units but I haven't followed the method, as yet.