Table with all the datasources

I was wondering if it is possible to create a table with a list of all data sources plugins.
My goal is to use the dashboard with this table as a home page and the cells of this table as links to another dashboard. So once one of these links is clicked the correlated dashboard will use that data source that was clicked.

This leads me to a second question. Is there a way to keep the variable values from the preview dashboard while navigating? I know that using “Dashboard link” solves this, but most of the people are used to use the top left menu and it makes the variables be set to default value.