While searching for a simple map, I came across MapTiler.
Specifically, the following Basic Light looked good,
https://www.maptiler.com/maps/#784b0675-dce5-4a4f-b16c-0d8e06442314//vector/3/-122.45/37.79
as did the following Basic Dark.
https://www.maptiler.com/maps/#74f0e2cf-0dc3-46ba-98ed-c2395d4c71e2//vector/3/-122.45/37.79
However, when I tried to use the above maps from the My Cloud page, I had difficulty finding them.
In the end, I was able to reach them from the following URLs respectively.
| Theme | URL |
|---|---|
| Basic Light | https://cloud.maptiler.com/maps/positron/ |
| Basic Dark | https://cloud.maptiler.com/maps/darkmatter/ |
I hope this serves as a useful reference for anyone encountering the same issue.