Power BI Dax Filtering Question - Selecting all current and lower index values

HI All,

Apologies if my request was confusing!
The measure i have requested a solution for is a variable in a larger measure, which eventually gets wrapped in COUNTROW

If anyone cares, this is the solution i ended up going with

VAR filtertable = 
SELECTCOLUMNS( GENERATE 
'Skills Selection List', 
GENERATESERIES(1,''Skills Selection List',[Level],1))
"Skill",[Skill},
"Level",[Value]
)