I've got all the extra feet for my featherweight, including some I've purchased to use on the machine - my aunt gave it to me many years ago and none of the feet shown match any of those feet.
Additionally, I cruise our Featherweight dealers/ repair people and look to see what feet they might have, because you never know when you might need one of them (had been looking for a scant 1/4" foot for awhile till I found one last year). Between the two I think I've seen pretty much everything that has been made to work on a Featherweight.
I could be wrong, but who knows? Let's ask Lostn51 - Billy would know since he does ALL Kinds of old machines.