I would be willing to help you pick out the best wall charger, car charger, and cable for your Pixel 2. I’m not sure if you can order from Amazon DE, Amazon UK, or Amazon FR, so I will leave links to all three places.
I have the first Pixel, however I don’t think the Pixel 2 XL has any different charging requirements.
I have the PowerPort II with Power Delivery as @joshuad11 has linked to above and absolutely love it. Would definitely recommend it if you need a USB C port.
If you need more usb ports, I also have the 5-Port 60W USB Wall Charger PowerPort+ with PD Which also charges the Pixel rapidly.
So long as you are using a good charger and cable, using a USB A port is not too noticeably slower. Can’t say I really notice it in the car using this combo of cable and car charger.
I also use the same cable to charge from various power banks and the Pixel still charges rapidly.