As it says, I am in need of suggestions or examples for how to make a map that shows geographic features, but also political boundaries in an easy-to-follow format.

The terrain can be either general, such as highlands/lowlands/mountains, or detailed, showing swamps/forests/rocky land/etcetera as well.

I post this because most fantasy maps I see are very simplified with politics and very detailed in terrain, where there are only a handful of countries with simple borders. But this world is not like Middle Earth - there are up to 20 states in this particular region, and in this setting of a feudal world the borders are not so clean-cut.

I have been experimenting but I have not made anything satisfactory.