Show OBJECT TYPES instead of OBJECTS when querying Assets with AQL

[AV]

First an example of what I have in my Assets in Jira:

Let's say I have an Object Schema called 'Internal CMDB' where I store some CI's which I would like to use in tickets.

In this 'Internal CMDB', I have a couple of Object Types, which on their own can have other Object Types as child:

• Hardware
  • Server
  • Laptop
  • Workstation
  • Monitor
  • Switch / Router
  • Printer
  • Firewall
  • Resources
• Software
  • Operating System
  • First-Party Software
  • Licenses
  • Certificates

Now in a form (let's say an incident form), I want to field (I am using a Custom Field, with Field Type: Asset Objects) where I can select one of both main Object Types. Followed after by another box where I can select the child Object Types, and eventually I would like to select an object, out of the Object Type.
So someone reports a ticket because their laptop has an issue, I want our servicedesk to be able to select Hardware > Laptop > 'laptop123 - Paul's laptop'

I can get all the OBJECTS to show, which belong to Object Type 'Hardware' for example, but I am unable to show all OBJECT TYPES which are childs to 'Hardware'.

So basically i want to be able to show OBJECT TYPES, and not OBJECTS, or any other suggestion what would be the best practice for this which might be better suited for what I want to do?