Dropdown Default always first item

I have a dropdown which connects to a dataset on my page: Creator

The Creator dataset is then used as a filter in another dataset: Filtered Content

I am showing the results of Filtered Content on the page.

However, the dropdown to select the Creator always defaults to the first item in the list and the ‘All’ option does not do anything.

Am I able to have the dropdown initially not have an effect on the Creator dataset so that all values are considered. Also, can I enable the ‘All’ selection, or deselect the creator that has been chosen?

I’ve dug in more and this problem is related to having two filters.

Filtered Content is choosing content based on only one Creator. Initially, it’s the first Creator in the list. I can choose the second Creator, and their content is shown, but I cannot choose multiple. It always only shows the first creator’s content.