I mean, if you included a link so we knew what "top 10 regional sales" you were talking about that would help...
Anyways, platform specific ones are easy. Sony release monthly top 10s for digital sales for each region and I'd assume Microsoft/Nintendo do the same. Japanese digital sales are kind of tracked too, Famitsu releases some digital figures, although I think they only do it monthly (or possibly less often than that even) rather than weekly.
They are usually posted by William on the front page of Vgchartz if no longer there , you can find them by clicking Articles at the top then news.
There are a range of regions Australia , New Zealand, Swiss they have been showing up since late last year.