3 sockets with fitters. Of the 2 similar ones, one says Uno. Other looks identical with no marking. One is missing a thumb screw.

One is Bryant socket and one Arrow.

3rd one is Bryant socket with patented number. On fitter. Pull Chain.

All 3 are Fat Boy sockets.  All turn freely and chain pulls smooth. Haven't tested for connection.

Acorns fit snug but I left them loose in pictures so you wouldn't have to wrestle with them when wiring.

I think all the fitters are 2 -1/4". Will update.