Although Moneta does not list Greek rulers .... it does support the full range of Greek letter (at least I think so, not a Greek collector) ... but it does have support for Provincial Romans and I am fairly sure that your Greek letters are covered?
Additionally you can add rulers to the database, your can add mints/cities and so forth. If it has been a little while since you looked at it... might be worth your time. You can also build your own obverse and reverse legends in the database ... it is quite expandable.
Anyways ... I would be more than happy to test it for you... I have included two images of a provincial coin report from a coin I entered into Moneta as an example. (I just added a city to it to show the city vs mint feature)
And in the interest of full disclosure, I should note that we are resellers of Moneta ... but were users of Moneta long before we had the opportunity to sell it!
Let me know if you have questions, I would be happy to try and answer them for you.