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If you search for “edit pdf”, then to see all click on “more…” link. Then you can sort by whatever criteria you fancy.
I found one of the many posts, Pdf annotating tools grayed out which you might want to read rather than repeating all here.
In particular, see replies from DEVON Techologies’ @cgrunenberg My understanding is that DEVONthink uses PDFKit. http://pdfkit.org
Bottom line is that not all PDF’s are created the same, unfortunately.