The most recent official Italian survey of vineyards, performed in 2010, lists about 440 different grape varieties growing in Italy. But new varieties continue to be recognized, and as of mid-2018, the national registry of grape varieties cataloged 517 winegrapes. A lot of these are not grown in great quantity, but the diversity of grapes in nevertheless astonishing. Find a complete list in alphabetical order of most of the significant varieties, including all varieties with more than 400 hectares (1,000 acres) planted or that feature in a DOP wine at: italianwinecentral.com/variety-alphabetic/ 

VARIETIES BY COLOR - https://italianwinecentral.com/varieties-color/
VARIETIES BY REGION - https://italianwinecentral.com/variety-region/
WINE GLOSSARY- https://en.wikipedia.org/wiki/Glossary_of_wine_terms

HOW ARE THE WINES RATED?

​Wine Spectator: James Suckling is an American wine and cigar critic and former Senior Editor and European Bureau Chief of Wine Spectator as well as European Editor of Cigar Aficionado.
About the Scores:
Ratings reflect how the editors feel about a particular product. Beyond the rating, we encourage you to read the accompanying tasting note to learn about a product’s special characteristics.
98–100 Classic The pinnacle of quality.
94–97 Superb A great achievement.
90–93 Excellent Highly recommended.
87–89 Very Good Often good value; well recommended.
83–86 Good Suitable for everyday consumption; often good value.

Wine Enthusiast: Reviews wines from Italy. Italian Editor Kerin O’Keefe reviews all Italian wines for Wine Enthusiast. Previously she wrote regularly on Italian wine for Wine News, World of Fine Wine and Decanter. 

The Gambero Rosso wine ratings in Vini d’Italia are built up on the number of glasses (bicchieri) awarded to a wine, which is indicated in the wine guide with a number of stylized glasses next to the wine's name. The highest rating is three glasses (Tre Bicchieri),[1] and the wine guide only includes wines which are seen by the editors as "above average". The ratings are based upon blind tasting by independent experts. The guide is edited in Italian, English and German language.
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Decanter World Wine Awards (DWWA) is a wine competition founded in 2004 and is the world's biggest wine competition with over 15,000 entries per year. The results of the competition are published on Decanter's website and in Decanter's August edition.

From 2000 and currently Luca Maroni is Vinitaly consultant and, in the frame of this crucial event, he manages an exhibition area of over 500 sq. m. with the initiative “Trendy oggi, big domani” (Trendy Today, Big Tomorrow) dedicated to the best Italian wine newcomer producers selected by Luca Maroni.

Kerin O’Keefe is a wine critic, author and lecturer kerinokeefe.com