The only book I know of that covers the varieties is
The Shield Five Cent Series by Fletcher 1994. I don't own this book so I am unable to comment on what it shows or doesn't show. It is a rather expensive book.
Someone with a copy of Cherrypickers will be able to tell you if it contains all the varieties or just the popular ones. I haven't purchased this book and can't answer your question.
I do see that Mr. Spindel's wensite does provide a trial version of the
Shield nickel Viewer. Maybe it's worth downloading it and seeing if it provides you what your after.
http://www.shieldnickels.net/snv/snv.htmlSorry I'm not much help Ed.
-MV