Xiaomi phones also have it but you can block Wi-Fi only for user (non system) apps. However you can block mobile data access to all apps. None of the Samsungs

Xiaomi phones also have it but you can block Wi-Fi only for user (non system) apps. However you can block mobile data access to all apps. None of the Samsungs I have owned so far had this feature and neither did my last Pixel.