Ecobee was (I think) the first one to have remote temperature sensors, and now Nest has them, too.
Yes, they're (still) smart devices, but this can work without the smart functionality. The sensors detect which room humans are in, and adjusts so that the thermostat controls the heat to get the OCCUPIED room to the desired temperature. So, no 'device with an app' required (eg, this could be replicated without internet functionality).
Most fans these days ship with wireless remotes. Even my wall switch is a wireless remote. So the light and fan can be controlled separately -- no IoT required here as well.
I'm not a big fan of smart devices, but I've had several issues that were solved very conveniently by smart devises.
The temperature in my second floor bedroom and my first floor living room is usually totally different. The thermostat is in the living room. So all too often we'd be laying in bed and the temperature is wrong. So now you have to walk down stairs, adjust it and hope you got it right. We never bothered doing anything like turning on the vegetation function for 30 minutes. Nest thermostat was a total game changer. Sometimes it does annoying stuff and isn't nearly as smart as I'd like it to be, but it's so much better than the old thermostat.
Similarly I have ceiling fans with light bulbs. You can turn the whole thing on and off with wall switches, but only control lights and fan with a strong that hangs from the fan. Unfortunately the builder or previous owner put these in a room with cathedral ceilings. So I'd need a ladder to control these properly. I put smart lightbulbs in and now at least those can be controlled independently.