Glassies Please? Recognize this maker? Fiesta-esque enameled ring shot glasses c.1940s?

Some help, please? I can't find these little 2.25" H shot (?) glasses on Google et al. They remind me of the WWII era Xmas ringed ornaments or Fiesta-ware ilk. Really nice molded oval idents give the glass a nice watery appearance. No marks. The orange one has a weird imperfection, like an accidental inclusion. It's not a crack. I want to put them in the Darkwing yard sale but need to make sure they're not the Holy Grail version before lowball pricing them. Since I can't find any similar, I'm hesitant, but probably delusionally optimistic. Thank you!

 

Hello? Anyone? Bueller? @TallCakes ?

 

Are the colored rings fired on enamel or colored glass?
The indents would be called optic, which would be a good search word.

 

They are enamel, thanks for the search clue...

 

Hmmm, could they be called "raindrop" optic, like these below? That's a new term to me....https://www.worthpoint.com/worthopedia/set-vintage-federal-glass-depression-2790938243

 

maybe compare the thumbprint optics to Federal. They did do some multicolored bands/rings; also did the raindrop optics
Glass Etch and Pattern Gallery (chataboutdg.com)

 

Thanks all! Still cannot find exact matches. The varying widths of monochrome rings are unusual.