EDIT: Several people have commented that I shouldn't ask for shopping recommendations -- fair enough, but really all I want is a more general discussion of the topic: whether it's a reasonable goal to try to make your gravel bike 'more road bike-like' with different tires, and how to achieve it. You don't need to mention any specific products.
I have a 2020 Giant Revolt 3 (https://www.giant-bicycles.com/us/revolt-advanced-3) gravel bike that I ride 99% on tarmac. I was considering a road bike, but as I was coming from a mountain bike background and had never ridden a road bike, this seemed a good compromise. I thought I'd be taking it out on gravel trails, but with Covid restrictions (we are confined to a pretty small area) and the fact that I am trying to avoid train travel (again, due to Covid), I'm riding it pretty much only on the road.
My bike shop said it's almost time to replace the tires and I'm looking for recommendations for new tubeless tires. I'm wondering whether there is any choice that would move me a little bit in the 'road bike direction' in terms of reducing drag and increasing performance, but maintain the grip and stability, particularly in wet weather, that I've gotten used to.
Most important is maintaining safety (grip and cornering, particularly going downhill, and in the wet), but, as said, I'd be keen to see if I can get a little more "quickness" (trying to move in the 'road bike' direction, that is, reducing drag while riding). Is it possible to maintain the same level of safety with a 'road tire'?
Finally, is my goal even a reasonable one? I checked out How much energy is lost with a gravel tire compared with a road tire? and while there is a difference in running gravel tires or 'road' tires, I am not sure how important it is.
For what it's worth, I ride mainly up and down on hills (daily climb is about 600m), and live in the EU (so I'd need to buy the tires here). The rims are Giant S-X2 Disc, and the current tires are Giant Crosscut AT 1, 700x38.