Report (Saved Search) for Multiple Asset Types

I know that a custom search can be created for specific assets, however, it is only one asset type or all asset types. Is there a way to report on a select number of asset types?

For example, I need to create a list of network devices such as modems, routers, switches, and firewalls. Currently, I have to create a custom asset search for each one. I would like to be able to create a list of all of the items in one list.

Any ideas or suggestions?

There’s a few fields on there I would like to see have a field picker or allow us to enter more than 1 entry, such as Policy Folder. The solution for selecting multiple policy folders would be to add something to the name that was common between them and then filter on that, not sure if you can do anything like that.

After further thinking, may have to do a custom asset field and filter on that.