I want to extract a specific keyword from a variable like desired output.

$CU2016 = $Hotfixes| Where-Object { $_.Title -like '*Cumulative Update for Windows Server 2016*'} 
$CU2019 = $Hotfixes| Where-Object { $_.Title -like '*Cumulative Update for Windows Server 2019*'} 
$CU2022 = $Hotfixes| Where-Object { $_.Title -like '*Cumulative Update for Microsoft server operating system version 21H2*'} 
$CUWIN10 = $Hotfixes| Where-Object { $_.Title -like '*Cumulative Update for Windows 10 Version 22H2*'} 

My desired output :

KB5036899
KB5036896
KB5037033
KB5036892

Inside of Hotfixes variable :

Title
-----
                                       
2024-04 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5036899)                                                   
2024-04 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5036896)                                                   
2024-04 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5036909)                        
2024-04 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5037033)
2024-04 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5036892)