ok possibly an answer to the differences in the Olympia finish (see link) please scroll down the right hand side to see the comments on Loetz Glatthttps://sites.google.com/site/loetzglass/loetz
On the link it discusses Loetz Glatt and says that
'Glatt refers to the smooth finish on these pieces....' and also 'These came in many colors, including Creta, Olympia (a very pale green), Bronce (bronze), Luna (blue top fading to clear at the bottom) as well as some others.'
Therefore making an assumption here, that on that basis, my vases (at least the two that have the cut rim) may be Loetz Olympia Glatt - where Olympia refers to the colour and Glatt the decor.
I'm not entirely sure where that leaves my other uranium Olympia but I think that must also be Loetz Olympia Glatt.
And yours are called Loetz Olympia then? I'm not quite sure where that leaves my little vase with the same surface finish but a different colour
but at least it seems the difference in our pieces is cleared up