I can give you two at least: TP-Link's Kasa line and Broadlink devices (IR blasters/etc). Now both try to hit their respective clouds, but they have local APIs

I can give you two at least: TP-Link's Kasa line and Broadlink devices (IR blasters/etc). Now both try to hit their respective clouds, but they have local APIs and if you firewall them off from the internet they work fine locally. In fact, I just debugged and found a workaround for the Broadlinks rebooting every 3 minutes as their cloud connectivity watchdog timer expired, and now they're rock solid (not released in HA but it will be soon).