Just wanted to let you know. And thanks for editing your post. Lots of people consult these named threads and those in Steph's Study Hall looking for examples, it's nice to keep them "clean" so as not to mislead people.
They may all be Akro but 4 & 6 may deserve another view or two. If there is a visible cut-off it helps to see a straight-on shot of it and then pics of both sides (like you're showing in the last photo.
Gotta remember, Vacor made swirls for a very long time, and we don't know a lot about their production prior to the time they started naming them. Regardless, that kind of orange peel is uncommon, maybe even rare, on American marbles.
Wouldn't it be great if we could ID every marble? My guesses: Alley, Champion, Alley, Alley. It doesn't much matter though, the collectible and monetary value is minimal regardless of who made them.
The pics are much more in focus but a straight on shot of the are in question would be helpful. At the moment something doesn't look quite right to me for Akro.
They did make peewee corks but they are very uncommon. I would want to see better pics, for some reason these are very grainy, and I am not sure what's up with this . . .
Makes me think it might be a lookalike.