Get-Hotfix finds the SSU KB included in the LCU for Windows Server 2019 for instance:
PS C:\Users\myself> get-hotfix
Source Description HotFixID InstalledBy InstalledOn
------ ----------- -------- ----------- -----------
myserver Update KB5013626 NT AUTHORITY\SYSTEM 08.07.2022 00:00:00
myserver Update KB4470502 myserver\Admi... 01.04.2020 00:00:00
myserver Update KB4486153 myserver\Admi... 01.04.2020 00:00:00
myserver Update KB4530742 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Security Update KB4535680 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Security Update KB4539571 NT AUTHORITY\SYSTEM 01.04.2020 00:00:00
myserver Update KB4577586 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Update KB4584642 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Update KB4589208 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Security Update KB5003711 NT AUTHORITY\SYSTEM 01.07.2021 00:00:00
myserver Update KB5004424 NT AUTHORITY\SYSTEM 03.08.2021 00:00:00
myserver Security Update KB5005112 NT AUTHORITY\SYSTEM 04.02.2022 00:00:00
myserver Security Update KB5012170 NT AUTHORITY\SYSTEM 09.09.2022 00:00:00
myserver Security Update KB5018419 NT AUTHORITY\SYSTEM 04.11.2022 00:00:00
myserver Update KB5009642 NT AUTHORITY\SYSTEM 11.03.2022 00:00:00
myserver Update KB5012675 NT AUTHORITY\SYSTEM 17.06.2022 00:00:00
myserver Update KB5014031 NT AUTHORITY\SYSTEM 08.07.2022 00:00:00
myserver Update KB5014797 NT AUTHORITY\SYSTEM 05.08.2022 00:00:00
myserver Update KB5015896 NT AUTHORITY\SYSTEM 09.09.2022 00:00:00
myserver Update KB5017400 NT AUTHORITY\SYSTEM 04.11.2022 00:00:00
It would be helpful to have a KB article that that explains what KB5017400 is, or at least, show it in the installed updates the same way as with the security updates.