Return The Corresponding Name For Each Of The Values

I have a matrix of staff names, listed down column A, and particular tasks listed along the top (cells B1, C1, D1, E1 etc). I have another matrix that contains the same data but reversed i.e.

In the central cell array there's everyone's scores, relevant to the particular task (ie, where the intersection is)

On a separate sheet, I have a drop-down list that contains the list of tasks. I would like a formula that can take the task shown in the drop down list, search in the matrix of data and find the top 10 scores for that task.

I also need a formula to return the corresponding name for each of the values that the top 10 search returns.

In the case of more than 10 people sharing the same score, I need the formula to return them all, irrespective of whether there are more than 10. Rather than the function stopping when it reaches 10, it should continue and return all the people with the particular score.