There is a chemist from the UK that has done extremely impressive work in this field and offers a lot of more technical informations (https://www.mikeware.co.uk/mikeware/downloads.html).

A couple of mine, "new cyanotype" sensitizer brush-coated on arches platine paper, digital negatives printed on Pictorico OHP film from scans of analog negatives:

https://i.imgur.com/ISWlz81.jpg

https://i.imgur.com/xYRUrKk.jpg