As I’m satisfied with my use of Safari’s Reader view, then putting a PDF of that view to DEVONthink, I can’t help you with Sorter which I rarely use it unless putting a bookmark to DEVONthink.
In Safari Reader view, you can pick you preferred font by clicking on the little font icons on the right side of the URL at the top.
I like saving PDFs (not Markup, text, etc.) because the features for reading, highlighting, and annotating PDFs are just right for my needs.