First, get Wine-Searcher Pro.
Don’t make any serious wine purchases until you’ve got Wine-Searcher Pro.
Then, for dry wines, you’ve got about 106 bottles of Franz Hiedler Singerriedel Riesling available in greater Austria:
About 39 bottles of Franz Hiedler Honivogl Gruner Veltliner:
A 1.5L magnum of the 1986 “Honifogl”:
About 24 bottles of FX Pichler Unendlich Riesling:
About 1 bottle of FX Pichler Unendlich Gruner Veltliner:
About 75 bottles of FX Pichler “M” Riesling:
And about 61 bottles of FX Pichler “M” Gruner Veltliner:
For dessert wines, you’re looking at either unoaked/stainless-steel Trockenbeerenauslese [TBA], from Alois Kracher, called “Zwischen den Seen”, or oaked TBA, again from Alois Kracher, called “Nouvelle Vague”.
Kracher made these from a variety of different vines - Riesling, Welchriesling [aka “Riesling Italico”, aka the Italian Riesling], Chardonnay, Scheurebe, etc - but pretty much anything from Alois Kracher will be “Wine of the Tasting” at almost any tasting event.
They’re a little more difficult to search for - you might have to scroll through some bogus hits until you find what you need:
Finally, Hiedler has been known to make a beerenauslese from Chardonnay, but it is very difficult to find, and I didn’t see any Hiedler Beerenauslese in Austria on Wine-Searcher.