https://membersfirst.coop/phantom-load-calculator
"Phantom Energy: Do Appliances Use Electricity When Plugged in but Turned Off?"
Also:
https://www.mirror.co.uk/money/leaving-your-phone-charger-plugged-18991558
"Phantom Energy: Do Appliances Use Electricity When Plugged in but Turned Off?"
The short answer is yes! A variety of different electronic devices and appliances, including televisions, toasters, lamps, and more, when plugged in, can consume electricity even when they’re turned off.
This phenomenon is commonly referred to as a “phantom load” or “vampire energy.” A phantom load is any electronic device or appliance that consumes electricity when turned off but still plugged into an outlet. These appliances and electronic devices provide the modern-day conveniences we rely on, but they also waste energy and cost money. The U.S. Department of Energy says on average, 75 percent of the electricity used to power home electronics and appliances is consumed while the products are turned off.
Also:
https://www.mirror.co.uk/money/leaving-your-phone-charger-plugged-18991558