There are 8 separate lists: U.S., England & Wales, Scotland, Northern Ireland, Ireland, Canada, Australia, & New Zealand. From there I pulled out the names that appear on all Top 100 lists (yes, I was limited to Top 100s, as a few countries only published that much), and it's about what you'd expect:
(in approximate order most --> least common overall)
And 5 names appeared in 7 of the 8 Top 100s:
Ireland is the outlier, as only John & Max rank there. The US is missing Max, and England & Wales is (surprisingly) missing John.
I also found it interesting which names ranked only in one country (#50 & above, as the names really start to branch out the less popular you get):
US: Julian (#47), Isaiah (#48)
England & Wales: Muhammad (#14), Mohammed (#27), Finley (#36)
Scotland: Harris (#9), Brodie (#31)
Ireland: Rian (#35)
Australia: Nate (#43)
Canada: Alexis (#41), Mathis (#48), Antoine (#49)
In total, the US had the most "unique" names--18 (6 of which are Spanish or bi-cultural), while Australia had the least--5.