I'm not an Inkscape user, but I believe it'll allow you to use pattern brushes which is how I did my vector hachure brush set.

Essentially, I created a bunch of small illustrations that mimicked a section of hachure elevations, then used it as the base for a pattern. Then you just apply the hachure pattern you want to the stroke.

Here's a thread about my set: https://www.cartographersguild.com/s...ad.php?t=39622