I need Windows 11 22H2 installation media like what my computer came with, or 23H2.

Hi

A good internet search says ...

Rufus Alternative: Download Rufus (rufus.ie), select "DOWNLOAD" for Windows 11, pick the version (22H2/23H2/24H2), language, and architecture.​

• It fetches from Microsoft and creates the ISO or bootable USB directly.​

Is that suitable?

No, I can get that through UUPDump.net.  Dell includes extra partitions to ensure the computer can be restored to its "factory new" state without needing external installation media.
Factory Image/Recovery Partition: This largest extra partition contains the specific version of Windows, along with all pre-installed Dell drivers and software, which the default Windows reset cannot do.
Diagnostic Partition (e.g., DellSupport): Contains tools designed to test hardware components.
BIOS/System Partitions: On some UEFI-based systems, Dell includes extra small partitions to manage BIOS updates and specialized boot configurations.

Hi

I am not sure I understand your particular predicament.  

I use Paragon Partition Manager CE to mount and manipulate partitions in Windows.  Where you can assign a drive letter to hidden partitions etc.

Perhaps a screenshot of your Partition Layout?

I also use Gparted.

- Dell installs include two additional partitions that Microsoft installs do not have.  They interface with the BIOS for diagnostics and special EUFI functionality.  That functionality is lost when you use the Microsoft Retail install. 

- In the Dell support area you can ask for a boot image of your computer when it was new.  That is not what you get.  You get the latest version of Windows, 25H2 along with the most current version of Dell drivers.  What they are doing makes sense because Windows these days are being assembled from scripts, not distributed as ISOs.  However, you can assemble an older version with Retail.  I "get it" that most people don't know what they are doing so this is the simplest and often what people would rather have.  Moreover, Windows patches lately have been disastrous.

- The problem with that scenario is with 25H2, Microsoft installs with Hyper-V active and, unlike 23H2 and 24H2, you cannot turn it off.  If Hyper-V is on, Windows 11 becomes a VM.  Windows 11 is NOT running Hyper-V, Hyper-V is running Windows 11 in a Hyper-V VM.  Hyper-V is pathetic compared to VMware Workstation.  If I install VMware Workstation on a computer with 25H2, the scenario becomes:
VM>VMware Workstation>Windows 11VM>Hyper-V.  Besides performance issues, it limits the features of VMware Workstation.

- Broadcomm/VMware forums show many have worked on this issue and nobody has gotten VMware Workstation to be able to be set up properly under 25H2.  However, I discovered a method but it requires 23H2 (best) or 24H2 (turn some things off) BEFORE allowing 25H2.  VMware Workstation gets a lock on the CPU's virtualization interface which denies Hyper-V. 

*This situation is not a VMware Workstation problem, this is a problem for ANY virtualization software.
I now have laptops running VMware Workstation on Windows 11 that is running on the hardware, and the full capabilities of VMware Workstation...using the Windows Retail install.

- The ideal situation would be to start with a Dell OEM install of Windows 11 23H2 so I could retain the Dell partitions, and then transition to 25H2.  While there is plenty of talk out there about how I can specify the 23H2 Dell OEM version, I have not found any way to get that from the Dell site.

- Back to your idea of using partitioning software.  It might be possible to take a Dell 25H2, and finesse in an install 23H2 Retail, and upgrade from there.  However, you can see that the cleanest method would be to be able to start with the Dell 23H2 install and let standardized, proven processes manage the install.  I will sooner go with the Retail installs.  I'm here seeing if anyone knows the whereabouts of the so-far-mythical location where I can specify a 23H2 reinstall like came with the computers. 

Thanks for asking.