Is there a way to only publish Knowledge Model asset objects, not the whole Knowledge Model asset?

I have not come across any solution that would help you publish  Knowledge Model asset

It would be better to understand what is your use case ?

Suppose you have more than one developer working on views that all use the same KM. As they develop the visualizations, multiple changes need to be made to the KM to support the views. When one developer publishes the entire KM, they take the changes of another developer and potentially cause issues with other published views.

Need a way for developer A to publish only certain objects in the KM, so as to not impact developer B's work on other objects.

There is no solution for this currently, only way to work on the same is alligning with the Developers.

I would suggest to raise a enhancement request with Celonis for the same.

I am the Celonis manager for our company and face the same challenge. An enhancement mimicking how publishing works for a package (where the user can select which assets are published) would greatly help CoE Leaders with multiple developers/ analysts working in the same environment.