While it is possible to view greater rift positions from either the home page sub tabs or your own battletag "GRift" subtab, it wasn't all that easy to navigate in the site.
If you're in a clan and want to quickly see the worldwide positions for a specific category then click on the new "see" link in the clan page, this will allow you to quickly check the positions of players above and below you on any specific category (hover over the Rift tier number to see Time completed in these ladder pages).
Lastly, a reminder to those not aware of the new changes to the Clan scoring :
http://www.diablo3ladder.com/news-diabl ... t1277.html
Update 2 :
Importing and updating the greater rift database is a rather lengthy process and can take quite a while to fully process.
It is possible that clan positions and ranking positions are slightly out of sync while this data is being updated as all clan positions are batched processed at the end of each import cycle.
Eventually everything should be back in sync automatically but this window where the positions are out of sync can happen 3 times a day for a short period of time.
The battletag import (Red button) has now been updated to force a refresh of your clans rankings and score so you may use this method to keep things completely up to date. You'll see a feedback message at the end of your battletag import to indicate that your clans GR positions have been forced refreshed.