The bottom 2 look like Emblem Angola NY, which usually have a peculiar 2” offset (c-c) of the drive pin.
One might also check the diameter of the crank shaft holes by test-fitting on a more standard crank (see if loose, oversized).
Modern one-piece crank (OPC) sets have 15/16”-24tpi right side cones; (under 1”).
It looks like you have one crank set; perhaps one might also test-fit for interchangeability of the bearing cone hardware (suspect not if oversized).
Also note that Emblem was a supplier to Eaton’s of Canada, eh?
#1 looks alot like a late teens Miami with 2" drive pin spacing. Seeing that it also has the short pin spacing hole, I would think means it was drilled out to fit a different crank than Emblem. The others as AS mentions are Emblem. A known Emblem crank with 2" drive pin spacing and large diameter drive-side threads will vet all of them. Emblem and some Miami sprockets have a slightly larger center hole and 2" drive pin spacing/oversized threads and cones. These cranks and sprockets it seems were made by the same manufacturer but who?
I had a nicely re-drilled chain ring sprocket similar to the first one, but the new drive pin hole was drilled in the same arm (or leg) as the original reinforced hole, and not as far of an offset (more like standard).
Yes, big seat! Archie Sturmer said: "Also, seems like most of Emblems chain ring sprockets look like another bicycle manufacturer’s (e.g., Excelsior)" Seems Emblem used many sprocket designs with the 2" pin spacing. The more common ones below. And a couple unique ones as well below..
It's got the original over sized cones. The crank is straight and the threads are good. The only issue is the lock not sometimes cross threads. It looks like the nut may have been repaired because it was cracked at some point. What's strange about this crank is the size, it needs a narrower BB...