How to scale the creation of images for articles?

Question

Automation

Good afternoon!
I have a website with articles, mostly manuals, but no pictures. There are no pictures on the Internet on the subject, but they can be drawn in the editor.
I found this site ru.wikihow.com/%D0%BF%D1%80%D0%BE%D1%87%D0%B8%D1%8...
They have images explaining the text in almost all articles in a single style.
Question 1 - how to organize the rendering of a large scale of the same type of pictures for the site, there are graphic editors that allow the same picture to be presented in different ways (for example, a knife. In one article we check the density of the metal of the knife, in another how it is better for them to cut, in the third it is together with others in a collage, in the fourth how to sharpen a knife, etc.)?
Question 2 - how to competently delegate it, what specialists to look for, how to set technical specifications?
Question 3 - an assumption about the algorithm for creating images on the wikihow site