$URL = [string]'URL1','URL2','URL3'
$Username = 'Username1','Username2','Username3'
$Password = 'Password1','Password2','Password3'

$Default = [PSCustomObject]@{}

$Default | Add-Member -MemberType NoteProperty -Name 'URL' -Value $URL
$Default | Add-Member -MemberType NoteProperty -Name 'Username' -Value $Username
$Default | Add-Member -MemberType NoteProperty -Name 'Password' -Value $Password



This gives an output like:
URL                Username                          Password
---                --------                          --------
{URL1, URL2, URL3} {Username1, Username2, Username3} {Password1, Password2, Password3}



I want the output to look like:

URL                Username                          Password
---                --------                          --------
URL1               Username1                         Password1
URL2               Username2                         Password2
URL3               Username3                         Password3