Ask HN: Best Data Lake, Data Warehouse, BI Stack

I'm looking into building out some reporting from various systems and replace our old reports that fed from the transactional systems as those are in the process of getting replaced.

It has become apparent that the data needs to be shuttled off to a Data Warehouse and reporting should be built on top of it.

What are the best current tools for a Data Lake + Data Warehouse and specifically for building out reports on top of the metrics housed in the Data Warehouse.