Raspberry Pi Zero 2W isn't officially supported, but I managed to get the Core version up and running. It's perfect for small setups, but without add-ons, you're leaving a lot on the table.

The Raspberry Pi 5 is 85 x 56mm, and the Raspberry Pi Zero 2 W is 65mm x 30mm. Its slimmer size makes it easier to "hide the hardware" if you want a clean and tidy smart home set up.