This may not fully answer your question, but I use an Aukey magnetic air vent car mount on my two vehicles, a 2013 RAM and a 1995 Miata. Amazon.com: AUKEY Car Phone Mount, Air Vent Magnetic Phone Holder for iPhone X / 8 / 7 / 7plus / 6s, Samsung, LG, Nexus …
I have tried two different positions for the thin metal plate that attaches to the back of the phone with adhesive to enable the magnetic mount to work. I pulled the back off my prior phone, so most of the adhesive is worn off, but still enough to hold it in the right position before I put on my clear Spigen case.
Amazon.com: Spigen Ultra Hybrid iPhone X Case with Air Cushion Technology and Hybrid Drop Protection for Apple iPhone X …
The first position I tried was to place the rectangular magnet sideways near the bottom of the phone. That still allowed wireless charging using the two Seneo charging pads I purchased and used a couple of years ago with my Galaxy Note 5.
Amazon.com: Seneo Wireless Charger QI Wireless Charging Pad for Samsung Galaxy and All QI-Enabled Devices: Computers & A…
Unfortunately, the low position made the phone unstable when in the car attached to the Aukey mount. So I then tried placing the rectangular magnet vertically aligned near the top of the phone next to the camera hump. That made the phone very stable in the car on the magnetic vent mount. It was also high enough on the phone's back to allow wireless charging to worth with my two Seneo charging pads.
I should mention that there is also a smaller round metal piece that comes with the Aukey car mount that would take up less room on the back of the phone and have a lower risk of interfering with the wireless charging. But I already used that metal piece on another device.