My plan was to only classify a name as "Biblical" if it occurred in the Revised English Bible (specifically mine, the Oxford Study Bible). A name could be classified as a "Biblical (Variant)" if it occurred in another English Bible such as the KJV. I realize this is a little Anglo-centric but hey, the whole website is written in English and it's the only language I know. In addition to making my life a little easier this plan also reduces duplicates in the Biblical Names file -- I don't want spellings of John from every language with a published Bible to appear there.
However, the original Hebrew forms should probably be included, maybe as "Biblical (Original)". It would provide me a convient way to classify them.