alt Hacker NewsThread is fairly similar to Zigbee, just standardized and doesn't require brand specific hubs. You can actually control thread devices direct from an iphone with no hub at all.
Wifi for anything but cameras is a mistake, it only exists for maximum compatibility since everyone has wifi already.
> Wifi for anything but cameras
Buttons (key presses, remotes - think rapid input), Knobs, sliders, Pixel LED' strips, some MM wave sensors, ir/radio transmitters, really need wifi.
There is products where you will want a bluetooth proxy, plenty of kitchen/grill thermometers and scales for kitchen and bathroom are great examples.
Where range is an issue LoRa is a thing that has plenty of devices and is easy to DIY.