Magento 2.3 How to pass custom input field data to the sidebar Summary

I have created a custom input field attribute which will show up once a specific custom Shipping method is selected.
I have it working already. And now I want the data from the custom input field to be passed on the Summary Order in the sidebar together with the selected custom Shipping Method.

I have a look into these Reference 1 and Reference but what I want is to pass the custom input field data just below the selected custom Shipping Method.

Note: Data of the custom input field has been saved to the database already.