@SauPom, Thanks for posting in Q&A. Based on my checking, there's no existing property to filter the Operating system SKU in Dynamic group. You can feedback to Microsoft Entra ID support to see if the property can be added into the rule in the future.
https://learn.microsoft.com/en-us/entra/identity/users/groups-dynamic-membership#rules-for-devices
For the devices with Windows N versions, you can create category for this and assign to these devices. Then create dynamic rule according to the device category.
https://learn.microsoft.com/en-us/mem/intune/enrollment/device-group-mapping
For the operatingSystemSKU, it can create in Intune Filter. I want to confirm how we deploy the Media Feature Pack? Is it deployed via Intune application? For app deploy in Intune, I find we can also add filter for it as well. If we deploy via this, we can consider adding filter.
https://learn.microsoft.com/en-us/mem/intune/fundamentals/filters
Hope the above information can help.
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