I designed this glasses rack to fit all of my glasses (champagne, wine, beer)
It is 23cm long, 10cm wide and 2 cm high.
It is made to be printed up
My cupboard is 60cm depth so a aligned 2 of them.

If the size does not fity you can easily shrink it with your slicing tool.

If you want to try it without printing the whole thing you can shrink it on the z axis so it's only 1 or 2cm, it will allow you to test your glasses.

For fixations I designed 2 wide bands that allow you to use adhesive tape.
But, if like me, you worry that this is not enough, there are 3 holes for screws.