This site has a lot of pictures of older flaptails.
Antique Saltwater Lures click on the link for Fishmaster to see some nice Sylvester flaptails.
I think Capesam's plug is based on the Lido plug Paul brought back to life. Wouldn't surprise me if he built others as well.
Here are two other takes on flaptails.
The needle on top is by Slip
The swimmer I don't remember the company name (I don't think it is a Capt'n Bill)