Here’s another tool to help you with your Greek Genealogy research. The chart is too large to include in this post, but you can access it through the following link - Greek Masculine Given Names in both Greek and English - at the HellenicGenealogyGeek.com website. The chart includes: Greek Masculine Name & Variations, Greek Abbreviation, English Transliteration, English Abbreviation, and English Counterpart.
Hope you find this helpful.
Good luck with your continued Greek Genealogy research.