I have updated the work plan for variant group:

https://docs.google.com/document/d/1UM1WdyMC5HIM3jyu3V75yVFQ0ZndguGV3pAMkeDhsZ4/edit#heading=h.1cisukv11v4q

and created this summary document with available body of knowledge to facilitate our work

https://docs.google.com/document/d/1w76ObHKBuhlMh4ajX07M1x9eNSUiCuhHTq9sNzaBycg/edit

-Dennis