here's a list of recommend gravel bikes
https://www.bikeradar.com/advice/buy...t-gravel-bikes
One of the first ones they list has the Shimano GRX RD-RX810
https://www.boardmanbikes.com/gb_en/...-9.0-2021.html
We don't have this bike in the states or at least I have never seen one.
I like 2x myself for when I put on my road wheel set then it's 99.9% as good a road bike. Some people swear by 1x though.