Connected tables problem

Hi stevedata ,
Based on your description, first create the following relationships in these tables

Create field parameter

Parameter = {
    ("target list A", NAMEOF('target list A'[target list A]), 0),
    ("target list B", NAMEOF('target list B'[target list B]), 1),
    ("target list C", NAMEOF('target list C'[target list C]), 2)
}

Create a mesure

Measure = 
SWITCH(
    TRUE(),
    SELECTEDVALUE(Parameter[Parameter Order]) = 0,IF(SELECTEDVALUE('target list A'[target list A]) = BLANK(),0,1),
    SELECTEDVALUE(Parameter[Parameter Order]) = 1,IF(SELECTEDVALUE('target list B'[target list B]) = BLANK(),0,1),
    SELECTEDVALUE(Parameter[Parameter Order]) = 2,IF(SELECTEDVALUE('target list C'[target list C]) = BLANK(),0,1)
)

Create a table visualization

Use the measure as the filter of the table visualization

Final output

Best regards,
Albert He

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly