I’m not a scroll saw person. I do marquetry and use a chevalet to do my cutting but for me the big question is " Why do you want patterns in the first place?"
For me creating the design, whether it be from scratch, from a photo, or adapted and refined from classic styles, is as much a part of my finished piece as the actual cutting and assembly. Making something that someone else has already made just has no interest for me at all.
The early bird gets the worm but its the second mouse that gets the cheese.