Assistance in building array of Exchange powershell output

Question

I am trying to build a script that can get a list of members of a distribution group recursively, and then output the data in a way that is manipulable.

The below code works fine so far, but only outputs a final list of recipients on the screen, with two columns (Name, RecipientType). I have tried a couple of ways to instead output the results to a variable or array in order to manipulate it, however none of them have worked.

What would be the best way to take the $Member variable, and add it to another variable or array?

function Get-DistributionGroupMemberRecursive ($Identity) { 
    $GroupMembers = Get-DistributionGroupMember -Identity $Identity
    foreach ($Member in $GroupMembers) { 
        if($Member.RecipientType -like "*Group") { 
            Get-DistributionGroupMemberRecursive -Identity $Member.Identity 
        }
        else {
            $Member
        }
    }
}

Get-DistributionGroupMemberRecursive -Identity some_address@domain