Dear JimDCross,
Really glad to receive your response again.
From the picture you uploaded, it seems you can open Outlook, configure your account to Outlook and import the .olm file to Outlook client, right?
This is really good news so far, and I understand what you are currently worried about is that you only want to use the first set of On My Computer folders and no other complicated subfolders.
I did some tests on my side and based on my tests,
I tried to see if there is an one-off solution, but I only find the manual way to do it, I'm feeling sorry for the inconvenience.
However, it's not so difficult to figure out this, but it takes some time, I’d like to say thank you in advance for your continued patience and efforts.
To doing so, right click on those subfolders one by one, select the option “Copy” > search for the corresponding folder under the
On My Computer folder > click Copy, below pictures are for your kindly reference:


When you done, it is recommended ollapse all series unwanted subfolders rather than delete them in case you missed to move some folders.
Again, I really appreciate for your time and efforts.
Sincerely yours,
Jennifer