Most efficient way to set variable based on different results - function

Question

I am running validations based on details about the machine the script is running on. I currently have an API that will return 1 of the following
Name1
Name1, Name2
Name1, Name3
Name1, Name2, Name3
Name2, Name3
Name2
Name3
What would be the most efficient way to run a different set of validations (functions) based upon one of those 7 results?
EDIT: Here is some pseudo code to represent what I am trying to accomplish. I am hoping to make the switch and values in the where-object of each switch cleaner
function returnRelevantBlankValues {
$instance = $args[0] #could be any 7 of the strings above
$inputFile = "C:\path\input.txt"
$fileResults = "C:\path\output.txt"
switch ($instance){
"name1" {
Get-Content $inputFile | where-object {
$_ -like "*name1*" -and $_ -notlike "*name2*" -and $_ -notlike "*name3"} > $fileResults
}
"name1, name2" {
Get-Content $inputFile | where-object {
$_ -like "*name1*" -and $_ -like "*name1*" -and $_ -notlike "*name3"} > $fileResults
}
}
}

Answer 1

I validate based on a server's role, and a server can have more than one.
First I create server objects:
$servers = #()
$servers += New-Object -Type PSObject -Property #{
Name = "Server1"
Role = "DB"
}
$servers += New-Object -Type PSObject -Property #{
Name = "Server2"
Role = "DB","Application"
}
(In actuality I store them in XML, but this works)
Then, you can use the $_.Role -contains "Application" to determine if you want to run a check. This also makes it easier to eventually add additional servers of similar roles. YMMV depending on the details of what you're trying to check.