How to turn comma separated list into Venn Diagram Format in Power Query

My goal is to create a ven diagram out of database data. I am happy to achieve this in 2 ways

1. Using Flurish.com which requires me to solve this power query problem.

2. Being suggested other software that can automatically create Ven Diagrams

The database table looks like this:

Flurish.com requires me to get it in the format

How can this be achieved?

I have attempted to create a unique list of all 'Shared Interests' but I don't know how to add new rows of every unique combination separated by a dash -

I then don't know how to calculate the value column of these overlapping groups. I suspect using pivot functions are the way to go here but so far I have not had any luck.

In powerquery try

let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],

//  Combo algo adapted from from Bill Szysz 2017
process=(Items as list) as list =>
let  AddIndex = Table.AddIndexColumn(Table.FromList(List.Sort(Items)), "Index", 0, 1),
ReverseIndeks = Table.AddIndexColumn(AddIndex, "RevIdx", Table.RowCount(AddIndex), -1),
Lists = Table.AddColumn(ReverseIndeks, "lists", each List.Repeat(List.Combine({List.Repeat({[Column1]}, Number.Power(2,[RevIdx]-1)),List.Repeat(   {null}, Number.Power(2,[RevIdx]-1))}), Number.Power(2, [Index]))),
ResultTable = Table.FromColumns(Lists[lists]),
AllCombos = List.Sort(List.RemoveLastN(Table.AddColumn(ResultTable, "Custom", each Text.Combine(List.RemoveNulls(Record.ToList(_)),"-"))[Custom],1))
in AllCombos,

#"Added Custom" = Table.AddColumn(Source, "combos", each process(Text.Split([Shared Interests],", "))),
#"Expanded combos" = Table.ExpandListColumn(#"Added Custom", "combos"),
#"Grouped Rows" = Table.Group(#"Expanded combos", {"combos"}, {{"Count", each Table.RowCount(_), Int64.Type}})
in #"Grouped Rows"