What I noticed is how much more aggressive they are in Europ.
On US sites, the banner is usually a smallish banner on the bottom.
On European sites, the banner is usually a giant "in your face" banner in the center of the screen.
Examples:
US: https://www.cnet.com/news/
Europe: https://www.heise.de/
US: https://www.nytimes.com/
Europe: https://www.spiegel.de
Why this difference? Aren't they all trying to comply with the GDPR?