Can company-owned/private apps be deployed with HMD Enable Pro?

Yes, company-owned/private apps can be distributed using the Managed Google Play store

Yes, company-owned apps can be uploaded as private apps to the Managed Google Play store directly from the HMD Enable Pro management console. Once the app has been uploaded to the app store, it can be distributed to all the preferred devices. The private apps are not publicly available, as the Managed Google Play limits the visibility to your organisation only.  

To upload a private app, an APK file needs to be added to the “Private apps”-section in the management console. Updating private app’s details on Google Play Console is done via “Make advanced edits”-option.