Any commercial products using ESP?
Just look for ESP32 CYD - CYD stands for cheap yellow display. There are a lot of variants.
https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display?t... . I bought mine for about $12 and it's been quite fun tinkering with it.
AFAIK my humidifier uses an ESP32 chip.
I think there are plenty using espressif chips. One of my robot vacuums (possibly the Neato?) certainly appeared to be.
A lot of Shelly devices use ESP chips: https://www.shelly.com/ - And they are hackable!