Thank you, these are very useful.
But please be aware that these hatchings are not true vectors.
I am preparing files for Lightburn (laser cutting etc) and quickly see that these hatches disappear when an an .svg containing them is imported into Lightburn.
This is an Affinity issue: they misuse the term 'vector' (styles, brushes etc).
There is a solution but it takes time. It means you will be outputting the file as PNG and then vectorising it afterwards.
1. Use these hatch patterns. Output your file with its hatch pattern as a PNG in high res eg 2000 px X 2000 px or greater.
2. Import that PNG into Inkscape (free) or Illustrator (sell your family to rent/purchase this Adobe product), and vectorise it.
Inkscape works very well. be patient. Sometimes you need to choose /toggle to 'Centre Line Trace' mode. Worth the hassle.