How do I go about creating a Ribbon component in QT?

[Raj97]

A Ribbon is the following component:

I would like to build the component using QtQuick (QML) and PySide2 as backend.

Current Solutions I have taught:
I know I can build the buttons using a Tab Bar, i.e:

I can create three different delegates for the three different types of button:
Delegate 1:

Delegate 2:

Delegate 3:

And change them by specifying as a type in the model.

But how do I put them together?
I have taught about:
• ListView can have only one orientation, so I am not able to build it using that.
• Grid View, but it also has the same problem of one orientation possible.

Can someone please give me an idea of how can I build the ribbon component?
How should the model be specified?

How Can I add the button group at the bottom, i.e: ?

(It should automatically expand as per number of buttons in the group.)