Name the Greek gods by their Ancient Greek names. If you don't know it, then try to translate it letter by letter. If you translate one letter as one but it doesn't work, then try another - e.g. k and c. Nymphs are included notwithstanding the fact they die. Majority are spelt with the Latin transliteration. Read the first caveat below.
Beware that 'H' is 'Eta' so it isn't 'h' but you may need to add it in. 'Ai' may be transliterated as 'ai' and 'ae'. 'Phi' could be 'f' or 'ph'. 'Os' could be 'os' or 'us'. 'K' could be 'k' or 'c'. 'Y' could be 'u' or 'y' - Gamma could also be 'y' as well as 'ng'. 'Es' could be 'es' or 's'. 'poi' may be translated as 's'.
Some are a group of gods; deified mortals are included; names are only included once
All you really need to do is translate the letters