The 'adjective' sweet is loaded and often a shortcut when one wants to describe their preferred wine.
Fruit forward might be a better way.
Amount of residual sugar in each wine will be responsible for what is called 'sweet'.
A nice Riesling balances that with acidity.
Enough talking, infographic below created by Wines of Alsace spells it all clearly
Same issues of 'residual sugar' versus 'acidity' can be found in German Rieslings which cover a full range of flavors.
If German wines confuse you check German Pradikat System digest from Riesling Around the World chapter of 'Riesling Rules, the Book'.
Full Riesling Rules Book can be checked online...
Thanks to Michael Wangbickler for sharing 'Wines of Alsace' Infographic in Riesling isn't all Sweet (June 26) on Through the Bunghole.
(* Infographic created by Wines of Alsace USA)