Apple website data

Hi there! I have a question I am hoping someone can help me with as I am new to the IPhone. When I go into Settings > Safari > Advanced settings > website data. I am assuming this is my cache and cookies. I have noticed these remain even if Safari history is deleted. I guess my question is, is the information stored under “Website Data” synced across all devices. For example, when I checked my IPad, there were different websites under “Website Data” then there was on my IPhone even though both shared the same Apple ID. Thank you