A marble friend, Don, sent me these pictures as examples of what collectors may call Aces:
The base is sort of milky, but doesn't have the orange glow which the official Akro company Ace had:
Here are the ones he showed as basic Ace shooters.
Here's a more fancy variety. He called these Tomato Ace Cork Shooters.
The name that Akro sold them under was Moss Agate. (For Akro, Moss Agates could be patches, or they could swirly/corky marbles.) But it's a pretty solid tradition for collectors to call this kind Aces.