On second viewing, the one with the green and red dots in your first picture stands out as different from the usual frit marble. It would like to see a couple more photos of that one.
Maybe a couple more views of the amber one on the left in the second photo. That looks like it has more going on inside than I first noticed. Probably still modern or at least in the general "clearie" family , given the marbles it is with, but I want to make sure.