Thanks, dbakl. I'm aware of these - and the question I had for the group was whether any of the Winner cogs will work in Perfect freewheels. I don't think so, as the bodies and cogs were re-designed for the Winner and again for the New Winner. I don't know if any of the Winner or New Winner splined (not threaded cogs will work in the Perfect. In the former two, there were two different internal diameters of splined cogs, and the question is do either of these two fit the Perfect and if so, which one.
I will try to email the folks at Loose Screws to see if they know - they mention Alpha A, D, E, L, and S cog positions for their Winner cogs. Loose Screws states in their "Contact Us" page "Please do not ask us technical questions..." and "refer to the manufacturer or relevant technical information on our links page" but of course, there is no info on the position names for Winner cogs that I could find. They just say "If you are replacing a Suntour freewheel cog, look for the letter which signifies the position on the face of the cog." But Perfect cogs have no such signifying letter.

I have a Suntour document with a New Winner blowup from 1987, but the positions are not identified as Loose Screws does - clearly, there are two diameters of splined cogs and at least three different threaded cog types!

I have a Suntour Perfect blowup from 1976 - in this freewheel, there's only three type of cogs: splined (with the four nubbins, with internal diameter all the same), and two types of threaded, one with a built-in spacer, and one without.