This one's far from scientific and is based solely on events I've announced since 2015. I have a pronunciation spreadsheet that has 3,019 unique names in it. There could be a small degree of duplication due to some names being with a middle name or a common misspelling like when translated (like Ukraine, Belarus), so I was curious how long my list was by style.
On the men's side, I have 1,188 names registered to MFS. I have 1,015 registered to GR.
So I've got more unique MFS names than I do GR names. Could mean there's less volatility in the entries on the Greco side, but if anything, it's just another number that I've got in my records.