And some ihome models are still on the official compatibility list.
Be aware, however, that a number of community members, including me, have found the iHome connection with smartthings drops off every few days and then you have to reconnect them, which is really annoying. I stopped using them in favor of MeRoss and iDevices (through IFTTT).
There is an official Meross/SmartThings integration, but it seems to be flaky right now, and I’m not using it for much yet.
I had two, but got rid of both of them because of the unreliability. But that was a couple of years ago, I don’t know if things have improved or not.
I do have an idevice plug. IFTTT works pretty quick?
It just varies from house to house. At my house, it’s about eight seconds, which is good enough for my uses but might not be fast enough for your light switch control.