Hi Ricardo, there is a shared database of charts and user metrics (CloudDB), but it doesn't include perspectives yet. You can browse and download charts using View > Download Chart, there you can select curated only for charts which has passed some review or uncurated/all for more options. The charts offered are specific to the View so you will get different chars if you download from Trends or Activities view.
If you want to share your own charts you can use View > Upload, but beware only the chart definition plus a screenshot are updated, no data is included, some users don't understand this and they share workouts/performances in strava-like fashion which we have to remove.
You need an official build to access CloudDB, some users building from source have shared their charts at this forum too, that is a reasonable use of this forum and may be useful if you want to discuss about the utility or how to create or polish a specific chart, also to share perspectives.
Cheers, Ale.