We use a third party cookie consent service. It shows different things depending on your location (and allows disabling different types of cookies depending on your local laws). Lawyers mandate it. It's easier than having to figure out the laws everywhere on our own. To me it shows a banner that stays out of the way. But I couldn't tell you for sure it doesn't cover the whole page to other people.
Have you considered just not violating anyone's privacy?
Cookie banners aren't a force of nature. They are required solely because you want to track people. Not tracking people? No need for a cookie banner!