Architecture for multiple sources being shared publicly and internally

Situation: 

• 3 data sources (A, B, C)
• Based on specific data from A,B,C, a single report ("PublicReport") needs to be shared publicly on a website. 
• Based on (other) specific data from A,B,C, a second report  ("OrganizationalReport") needs to be shared with three internal teams (Team1, Team2, Team3). Ideally, each team would have a seperate RLS view of this report. 
• Premium is NOT an option. Internal users have Pro licenses.  There is the possibility of upgrading some users to PPU, if needed. 

Problem: I'm struggling with how to set up the architecture, permissions, and user licenses for this. 

Setup so far: 

• Each of the data sources are being pulled into three seperate datasets (DatasetA, DatasetB, DatasetC). Lots of cleanup happens in each of these datasets. 
• I've also created an additional "MasterDataSet" that combines DataSetA, DataSetB, and DataSetC and does lots of additional cleaning and staging. It is now easy to generate the needed visuals from the MasterDataSet. (Much of this cleaning/staging could potentially be done--if needed--in DataSetA,DataSetB,DataSetC....but it is prefered to do in a single place for continuity purposes). 
• PublicReport and OrganizationalReport can both essentially be filtered versions of MasterDataSet (with different filters). 

How do I properly set up permissions/sharing/etc. for the DataSetA,DataSetB,DataSetC in order to enable the right data to flow to PublicReport and OrganizationalReport? 

Viewers of the PublicReport should NOT have access to all of the underlying data in DataSetA, DataSetB, DataSetC, and MasterDataSet. 

Thanks!