What software is used to illustrate wall assemblies? Is there an easy way to replicate these diagrams using free software?

I am experiencing a shortage of squiggly lines.
https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall
https://www.greenbuildingadvisor.com/app/uploads/sites/default/files/Stick framing – raised heel-700×293.jpg
https://www.greenbuildingadvisor.com/app/uploads/sites/default/files/raised_heel_0-700×906.jpeg
https://www.usgdesignstudio.com/wall-selector.asp
https://designcenter.nationalgypsum.com/storage/components/thumb/6.jpg
https://www.greenbuildingadvisor.com/app/uploads/sites/default/files/Roger Normand – Edgewaterhaus wall section – 3.jpg
PS: The site’s editor breaks longer links on linebreak in the post despite showing them as functional in the editor itself.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part


Replies
Hi Burninate,
I know a lot of professionals and non-professional owner/designer/builders who use the free version of SketchUp for all sorts of design and construction drawings.
Draftsite if AutoCAD is more your style.
https://www.3ds.com/products-services/draftsight-cad-software/
Basically, a free version of AutoCAD R14. Not too many "bells & whistles," but it will do basic 2D drawings. Many of the shortcut commands are the same.
Here's a quick overview of some other options:
https://all3dp.com/2/best-autocad-alternatives/
It looks like Draftsite's free version is being discontinued, and deactivated remotely in existing installs at the end of the year.
I use Sketchup's old free desktop version extensively for 3D work, but it doesn't have what appears to be customary 2D symbology for this particular style of diagram. I also have access to Inkscape and Illustrator. I wasn't kidding when I said I was missing squiggly lines (denoting insulation). My question is - where does one find this symbology originally?
I may have to just reconstruct it myself out of geometry.